# Statistical inference Essays & Research Papers

## Best Statistical inference Essays

• Statistical Inference and Interval Estimate
Submit completed tests as word or pdf files via email to paul.kurose@seattlecolleges.edu Due: Sunday, May 19 (by 8am). 1. a) In Chapter 6, you learned to find interval estimates for two population parameters, a population mean and a population proportion. Explain the meaning of an interval estimate of a population parameter. An interval estimate for a specified population parameter (such as a mean or proportion) is a range of values in which the parameter is estimated to lie. In Chapter...
1,241 Words | 4 Pages
• Statistical Inference and Standard Deviation
Question 1. (Descriptive Statistics) Investment Returns: These data are the annual returns on shareholders’ funds of 97 of Australian’s top 100 companies for the years 1990 and 1998. (i) Produce a histogram of the 1990 returns. (ii) Produce a histogram of the 1998 returns. (iii) Find the mean, median, range and standard deviation for the 1990 returns. Annual Returns % (1990) Mean 12.91865979 Median 11.38 Standard Deviation 9.297513067 Range 75.01 (iv) Repeat part (iii)...
438 Words | 2 Pages
• Bayesian Inference - 7885 Words
Biostatistics (2010), 11, 3, pp. 397–412 doi:10.1093/biostatistics/kxp053 Advance Access publication on December 4, 2009 Bayesian inference for generalized linear mixed models YOUYI FONG Downloaded from http://biostatistics.oxfordjournals.org/ at Cornell University Library on April 20, 2013 Department of Biostatistics, University of Washington, Seattle, WA 98112, USA ˚ HAVARD RUE Department of Mathematical Sciences, The Norwegian University for Science and Technology, N-7491 Trondheim,...
7,885 Words | 24 Pages
• Statistical Analysis - 626 Words
Statistical Analysis The analysis of the data from the study of Barnes & Noble stores is in two stages, the descriptive study and inferential statistical study. Initially, the Team will distribute and collect the questionnaires. The use of classification will summarize the data and express it in the tabular form for better understanding of the data. For example, if the questionnaires consist of information from males and females, the data is putinto two categories and...
626 Words | 2 Pages
• ## All Statistical inference Essays

• Inferences Concerning Two Means
Inferences Concerning Two Means If researchers want to compare two samples in terms of the mean scores using inferential statistics, they can utilize a confidence interval approach to the data or an approach that involves setting up and testing a null hypothesis. Whether two samples are considered to be independent or correlated is tied to the issue of the nature of the groups before data are collected on the study’s dependent variable. If the two groups have been assembled in such a way that...
562 Words | 2 Pages
• Methodology for Statistical Analysis - 975 Words
Assignment #3 Constructing a Methodology for Statistical Analysis Christian Diener 998029324 Anthony Chum Research Problem As pollution continues to rise in our cities due to various human activities, the incidence of cancer also seems to be increasing. The study of cancer is important because it is a major health problem in today’s society. Not only is it a significant contributor to deaths all around the world but it also affects our economy as a whole. It affects the economy because...
975 Words | 3 Pages
• Applied Statistical Model - 1390 Words
﻿Part A Topic of Interest The daily phenomena in our everyday lives that we encounter that is, to determine the places and choices of food we consume, and restrictions on them based on our daily expenses. Title The ability to bring a change to our daily expenses (savings) through our food consumption Brief background of this topic : We are often pressured by the same mind boggling question, that is “What are we to consume for lunch/dinner daily?”. This often arises and in order...
1,390 Words | 11 Pages
• Statistical Hypothesis Testing - 406 Words
A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about their attitudes. The mean score on the questionnaire for these 36 students is 70. The score for a similar class of students who did not see the film is 75. The standard deviation is 12. Using the five steps of hypothesis testing and the 5%...
406 Words | 2 Pages
• Statistical Hypothesis Testing - 648 Words
Simple Hypothesis: A statistical hypothesis which specifies the population completely (i.e. the form of probability distribution and all parameters are known) is called a simple hypothesis. 1. Composite Hypothesis: A statistical hypothesis which does not specify the population completely (i.e. either the form of probability distribution or some parameters remain unknown) is called a Composite Hypothesis. Hypothesis Testing or Test of Hypothesis or Test of Significance Hypothesis...
648 Words | 3 Pages
• Statistical Analysis of Colored Stones by Using Random Sampling
Statistical Analysis of Colored Stones by using Random Sampling Naomi Malary Lab Report 1 Ecology Lab 312 L-1 October 12, 2009 Introduction Random Sampling, a method often used by ecologist involves an unpredictable component. In this method, all members of the population have an equal chance of being selected as part of the sample. The results involving random sampling can be categorized as descriptive statistics and inferential statistics (Montague 2009).Descriptive...
748 Words | 3 Pages
• Chapter 1.1 - Stats - Statistics Data and Statistical
chapter 1: STATS – STATISTICS DATA AND STATISTICAL THINKING 1.1 The science of statistics * Statistics - is the science of data. It involves collecting, classifying, summarising, organising, analysing, and interpreting numerical information. 1.2 types of statistical applications in business * Descriptive Statistics - describe collected data. Utilizes numerical and graphical methods to look for patterns in data, summarize the information in the data and to present the information in a...
962 Words | 4 Pages
• Statistical Hypothesis Testing and Independent Samples Outcome
﻿Business Statistics, 9e (Groebner/Shannon/Fry) Chapter 10 Estimation and Hypothesis Testing for Two Population Parameters 1) The Cranston Hardware Company is interested in estimating the difference in the mean purchase for men customers versus women customers. It wishes to estimate this difference using a 95 percent confidence level. If the sample size is n = 10 from each population, the samples are independent, and sample standard deviations are used, and the variances are assumed equal,...
15,053 Words | 80 Pages
• Event Study - 283 Words
In this paper, event study methods are reviewed and summarized. In section 2, begin with discussion of one possible procedure for conducting an event study. In section 3 sets up a sample event study which will be used to illustrate the methodology. Central to an event study is the measurement of an abnormal stock return. Section 4 details the first step which is measuring the normal performance. Section 5 follows with the necessary tools for calculating an abnormal return, making...
283 Words | 1 Page
• BUQU 1230 - 1089 Words
﻿ BUSINESS STATISTICS BUQU 1230-S95 Fall 2014 Instructor: Ali R. Hassanlou, Ph.D. E-mail: Ali.Hassanlou@kwantlen.ca Phone: 604-599-2045 Office: Room D140 Surrey Class Hours: Saturday 10:00-12:50 Office Hours: In Surrey on Fridays 11:00-12:50 and Saturday 9:00-9:50 and 16:00-17:00. I am also available by appointment and e-mail (which I check regularly). Course Description: BUQU 1230 will...
1,089 Words | 6 Pages
• Bayview Statistics Case - 1156 Words
Prepare a managerial report for the dean of the college that summarizes your assessment of the nature of cheating by business students at Bayview University. Be sure to include the following questions. 1. Develop 95% confidence intervals for the proportion of all students, the proportion of male students, and the proportion of female students who were involved in some type of cheating. 2. Conduct a hypothesis test to determine if the proportion of business students at Bayview University who...
1,156 Words | 6 Pages
• Ap Statistics Report: What Music Does to Memory
What Music Does to Memory... By: Denellea McIntosh and Nichole Pierce AP Statistics Period 1 Purpose Music, one of the many factors that enhance our lives, has been a widely ranged field. From Classical music to Hip Hop, there are listeners of all ages, each having their own preference of music. Through research, it has been discovered that memory can be affected by many different factors, including music. Music has been found to stimulate parts of the brain, alleviating stress and...
1,109 Words | 4 Pages
• Wentworth Medical Center - 1083 Words
Results for the Good Health Survey Florida: Confidence Level at 95% is 1.001191951; Upper Limit is 6.551; Lower Limit is 4.548. The expected value has a 95% chance of being in the confidence range. In the case of the above problem, it has a 95% chance of being between 6.551 and 4.548. New York: Confidence Level at 95% is 1.0298559; Upper Limit is 9.0299; Lower Limit is 7.0299. The expected value has a 95% chance of being in the confidence range. In the case of the above problem, it has a...
1,083 Words | 4 Pages
• Inferential Statistics and Findings1 - 370 Words
﻿ Inferential Statistics and Findings QNT/561 2 April 2015 Inferential Statistics The research question at hand is as follows: Is there a difference in the coffee consumption rate of Americans based on gender? The first Hypothesis statement is; there is a difference in the coffee consumption rate of Americans based on gender. The second Hypothesis statement is; there is not a difference in the coffee consumption rate of Americans based on gender. The team will use the Confidence...
370 Words | 2 Pages
• Bayview University - 1519 Words
Introduction Due to the outbreak of the financial crisis in 2008, a large number of Wall Street executives, financial managers and other corporate officers were accused of their unethical behavior. At the same time, some people pointed that cheating had become more prevalent among business students. An article reported that 56% of business students admitted that they had cheated when they were studying in school, but only 47% of nonbusiness students admitted to cheating when they were students....
1,519 Words | 6 Pages
• Hcs/438 Dq's - 1323 Words
HCS/438 DQ’s Week 1: DQ1: What are the differences between descriptive and inferential statistics? According to Bennett (2009), the biggest difference between descriptive and inferential statistics is that descriptive statistics "deals with describing raw data in the form of graphics and sample of statistics" and inferential statistics "deals with estimating population parameters from sample data." This means that inferential statistics would be an estimate because the data would...
1,323 Words | 4 Pages
• QMB 3200 Summer Final prep
1 Some key points and concepts mentioned in class and solved by both online and face-to-face students Chapter 8: Statistical Inference: Estimation for Single Populations Confidence Intervals Notes * There will be no questions on the exam regarding the “proportion” of a population In optional Section 7.5 we concluded this chapter by comparing confidence intervals for μ with tolerance intervals. We emphasized that a tolerance interval is meant to contain a specified percentage of...
365 Words | 3 Pages
• INFERENTIAL STATISTIC - 541 Words
﻿ Inferential Statistics and Findings Erick Mart QNT/561 August 25th 2014 Mario LOPEZ Inferential Statistics and Findings Inferential Statistic is the process of drawing conclusions from data that are subject to random variation, for example, observational errors or sampling variation. Our team uses inferential statistic to compare two groups, which are Melks and DHL. This paper outlines the sampling and data collection procedure used to test the null hypothesis. The null and...
541 Words | 5 Pages
• Assignment 1 Bottling Company Case Stu
﻿ Assignment 1: Bottling Company Case Study Marquita Wright Dr. Jean Guo MAT 300 Statistics September 3, 2014 Abstract The following assignment will discuss the results of the study that was done to 30 bottles to figure out if what the customers are saying is true about the sodas that are being produced is less than what is advertised. Of the 30 bottles the mean, median, and standard deviation for the ounces in the bottles. A 95% confidence interval will be calculated as well. A...
545 Words | 4 Pages
• Mrkt Report - 999 Words
BUSINESS STATISTICS BUQU 1230-S95 Spring 2013 Instructor: Ali R. Hassanlou, PhD E-mail: Ali.Hassanlou@kwantlen.ca Phone: 604-599-2222; Mailbox No.: 9004 Office: Room D140 Surrey Class Hours: Saturday 10:00-12:50 Office Hours: Fridays 11:00-12:50, Saturday 9:00-9:50, and Saturday 16:00-17:00 I am also available by appointment and e-mail (which I check regularly). Course...
999 Words | 5 Pages
• Analysis of Research Paper - 726 Words
NUR/438 Version 3 Uses of Statistical Information Paper INS: THAYNE Gloria Vandello May 12, 2013 How are statistics used in your workplace? Statistics are used in the entire hospital, where I work. Before taking this class I didn’t gave it much thought of just how much statistics are being used in every floor. I guess I always believed that the word “statistics” was mainly used in the research department and that is where it should stay since it didn’t seem interesting enough to study. Now that...
726 Words | 2 Pages
• Business 101 - 788 Words
Bottle Company Case Study Daniel James Jr. Math 300 – Statistics Professor Issam MerhiStrayer University August 17, 2014 Mean, Median and Standard Deviation Explaining the make up a data description one must calculate the mean, median and standard deviation. To determine the mean, also known as the arithmetic average, is found by adding the value of the data and diving by the total numbers of values. In this case of a Bottle company study with thirty different bottles. The mean is...
788 Words | 3 Pages
• DISCUSSION QUESTION - 294 Words
﻿CHAPTER 15 Quantitative Data Analysis : Hypothesis Testing 3. A tax consultant wonders if he should be more selective about the class of clients he was serves, so as to maximize his income. He usually deals with four categories clients, the very rich, rich, upper middle class and middle class. He has record of each client and each client served, the tax paid by them and how much he has charged them. Since many factors in respect to the clients (number of dependents, business deductibles,...
294 Words | 1 Page
• Numerical and Verbal Hypothesis Statement
Numerical and Verbal Hypothesis Statement In business, small and large or personal the ability to have information to make a decision is essential. “Hypothesis testing is used in both science and business to test assumptions and theories and ultimately guide managers when faced making decisions.” (Doane & Seward, 2007, page 347, Chapter 9). We reviewed and analyzed the data set, Real Estate and developed a hypothesis test. The hypothesis test can be described with the following steps: Step...
680 Words | 3 Pages
• Midterm Statistics - 1384 Words
Mid-Exam for Statistics 2 for IBA 12 March 2013; duration: two hours It is NOT allowed to use a graphical, programmable calculator; only a simple pocket calculator is allowed. Write the answers to the questions on the attached answering form (on pages 7 and 8); only the answers, no derivations. (For this midterm, only the final answers to each individual question count.) This mid-exam contains 8 pages: 4 pages with information and three exercises, 1 page with a few formulae and 2 pages...
1,384 Words | 15 Pages
• Par, Inc. - 494 Words
Here is the report about Par, Inc., is a major manufacturer of golf equipment test whether the new ball drive longer distance than the current model. To compare the driving distances for the two balls, 40 simple tests both of new and current models were subjected to distance tests. According to the data, we got the information we need for a hypothesis test as follow: | Current | New | Means | 269.42 | 266.67 | Count | 40 | 40 | Standard Deviation | 8.09 |...
494 Words | 2 Pages
• Ch10 1 - 1841 Words
STATISTICS FOR BUSINESS AND ECONOMICS Seventh Edition Anderson Sweeney Williams Slides Prepared by John Loucks © 1999 ITP/South-Western College Publishing 1 Slide Chapter 10 Statistical Inference About Means and Proportions With Two Populations     Estimation of the Difference between the Means of Two Populations: Independent Samples Hypothesis Tests about the Difference between the Means of Two Populations: Independent Samples Inference about the Difference between the Means of Two...
1,841 Words | 24 Pages
• Marketing Research - 4843 Words
﻿Marketing Research on Facebook There has been a massive increase in the use of Facebook over the past few years and there is every indication that this will continue. The statistics generated by Facebook are impressive: 219 billion photos shared 2.7 billion ‘Likes’ – EVERY DAY!!! 1.18 trillion “likes 17 billion location check-ins Median age of a Facebook user is 22 years The social network was started by Mark Zuckerberg while he was at University in 2004. This social media website has...
4,843 Words | 23 Pages
• Aj Davis Project Part B
﻿INTRODUCTION Base on the data collected in the previous samples, the manager has made an alternative hypothesis on the following: A) The average (mean) annual income was less than \$50,000 B) The true population proportion of customers who live in an urban area exceed 40% C) The avarage (mean) number of years lived in the current home is less than 13 years D) The avarage (mean) credit balance for suburban costumers is more than \$4,300 Using the sample data, we will perform...
748 Words | 4 Pages
• Point estimation - 1037 Words
Inferential Statistics Making statements about a population by examining sample results Sample statistics (known) Population parameters Inference (unknown, but can be estimated from sample evidence Sample Population Sample Statistics as Estimators of Population Parameters A sample statistic is a numerical measure of a summary characteristic of a sample. • • • A population parameter is a numerical measure of a summary characteristic of a population. An...
1,037 Words | 36 Pages
• RES 342 Research And Evaluation Complete Class
﻿RES 342, (Research And Evaluation) Complete Class IF You Want To Purchase A+ Work Then Click The Link Below , Instant Download http://hwnerd.com/RES-342-Research-And-Evaluation-Complete-Course-1511.htm?categoryId=-1 If You Face Any Problem E- Mail Us At Contact.Hwnerd@Gmail.Com Week 1: Individual Assignment: Assignments from the E-Text Prepare answers to the following assignments from the e-text, Applied Statistics in Business and Economics, by Doane and Seward: Chapter 8 –...
1,955 Words | 8 Pages
• 2121 unit information - 1563 Words
ETF2121/ETF5912 Data Analysis in Business Unit Information – Semester 1 2014 Coordinator and Lecturer - Weeks 7-12: Associate Professor Ann Maharaj Office: H5.86 Phone: (990)32236 Email: ann.maharaj@monash.edu Lecturer - Weeks 1-6: Mr Bruce Stephens Office: H5.64 Phone: (990)32062 Email: bruce.stephens@monash.edu Unit material: No prescribed textbook Unit Book: available on the Moodle site. Exercises: available on the Moodle site. Software: EXCEL. Recommended Reference Books...
1,563 Words | 15 Pages
• Friedman Test - 222 Words
﻿Friedman Test for a random Block Design -The Friedman Test is used when compairing more than two populations or treatments randomly assigned within blocks. This is the counterpart of the F test or ANOVA used in parametric statistics. Unlike the F test or ANOVA which is used with the assumption that the observations taken from each of the populations are normally distributed, the Friedman test is used when no distrubutional assumptions are necessary. The following are the steps in doing the...
222 Words | 2 Pages
• LabReport - 811 Words
﻿ Faculty of Engineering, Architecture and Science Department of Mechanical and Industrial Engineering Program: Mechanical Engineering/Industrial Engineering Course Number IND605 Course Title Experimental Design and Quality Assurance Semester/Year Fall 2014 Instructor Dr. Sharareh Taghipour Lab/Tutorial Report NO. 2 Report Title Inference for Two Samples Section No. 1 Group No. 3 Submission Date October 10, 2014 Due Date October 10, 2014...
811 Words | 6 Pages
• Integration Of Work Hours And GPA
﻿Part 1: Integration of Work Hours and GPA Research Question: Being involved in greek life involves a lot Hypothesis: Through using a random sample of Indiana University’s students collected by Dr. Wakhungu and by assuming a 95% confidence level, does working a job outside of school cause students to have a lower GPA than their non-working counterparts? Working Non-Working GPA: Mean 3.184 3.479 GPA: Median 3.2 3.25 GPA: Mode 3 3 Standard Deviation .316 .384 Population Size 65 120 Lowest GPA...
282 Words | 2 Pages
• PROJECT PART B - 959 Words
﻿ PROJECT PART B: Hypothesis Testing and Confidence Intervals Math 533 Applied managerial Statistics. Instructor: Mr. Patrick Mayers. April 12, 2015 Guillermo H. Quintela. a. The average (mean) sales per week exceeds 41.5 per salesperson. The Null Hypothesis: The average (mean) sales per week is greater than or equal to 41.5 per salesperson. Ho:µ >= 41.5 The alternate Hypothesis: The average (mean) sales per week is less than or equal than 41.5 per salesperson. Ha:µ < 41.5 For a...
959 Words | 5 Pages
• Studyguidev Part4 Solutions Hyptestandreg 1
Solutions to Questions on Hypothesis Testing and Regression 1. A mileage test is conducted for a new car model, the “Pizzazz.” Thirty (n=30) random selected Pizzazzes are driven for a month and the mileage is carefully measured in each. The mean mileage for the sample is 28.6 miles per gallon (mpg) and the sample standard deviation is 2.2 mpg. Estimate a 95% confidence interval for the mean mpg in the entire population of Pizzazzes (you might need to round your answer a little bit to agree with...
6,631 Words | 28 Pages
• Week 5 Reflections - 792 Words
Week 5 Reflections Robert Blackwell, Antonio Moorer, Valarie Oudkerk, Brittany Rowe, and Michael Smith QNT 561 May 13, 13 Gerald Heidt Learning Team Reflection This week, we were introduced to the null and alternative hypothesizes. In doing this we were given examples of how to compare two populations by using confidence intervals in order to test the hypothesis. Team A was also introduced to how we can apply these methods to problems more applicable to our professional careers, when...
792 Words | 3 Pages
• Inferential Statistics in Business - 1311 Words
In today’s world, we are faced with situations everyday where Statistics can be applied. In general, Statistics is the science of collecting, organizing, and analyzing numerical data. The techniques involved in Statistics are important for the work of many professions, thus the proper preparation and theoretical background of Statistics is valuable for many successful career paths. Marketing campaigns, the realm of gambling, professional sports, the world of business and economics, the political...
1,311 Words | 4 Pages
Econ 400 B. Brown Spring 2008 Midterm Exam II: Answers Answer three of the following questions. You must answer question 5. The questions are weighted equally. You have 75 minutes. You may use a calculator and one side of an 8.5 × 11 as a cheat sheet. Relevant tables are attached. Please return the exams to my ofﬁce by classtime on Tuesday. Brevity is recommended. 1. Professor I. M. Economist asked his research assistant to estimate the parameters of the regression model Yi = α +...
2,070 Words | 9 Pages
• Understanding Business Research Terms and Concepts: Part 2
Understanding Business Research Terms and Concepts: Part 2 Which type of research design— exploratory, descriptive, or causal—is appropriate for the following examples? Explain why. • The goal of this research is to discover the real nature of the problem and to suggest new possible solutions or new ideas. Exploratory • A food manufacturer wants to know the demographics of people who purchase organic foods. Descriptive • A firm is considering hiring American celebrity Paris Hilton to...
259 Words | 2 Pages
• Statistics essay - 714 Words
﻿Statistics 1 Business Statistics LaSaundra H. – Lancaster BUS 308 Statistics for Managers Instructor Nicole Rodieck 3/2/2014 Statistics 2 When we hear about business statistics, when think about the decisions that a manager makes to help make his/her business successful. But do we really know what it takes to run a business on a statistical level? While some may think that business statistics is too much work because it entails a detailed decision making...
714 Words | 3 Pages
• PSY 315 Entire Course
﻿PSY 315 Complete Course Material All Weeks 1-5 A+Grade To Buy this Class Copy & paste below link in your Brower http://smarthomeworkhelp.com/downloads/psy-315-complete-course-material-wk-1-5-agrade/ PSY 315 Complete Course Material All Weeks 1-5 A+Grade Wk 1 DQ 1 How would could you use descriptive statistics in your personal life? Wk 1 DQ 2 What types of ethical issues arise when conducting research? PSY 315 Week 1 Individual Assignment Research, Statistics, And Psychology Paper ...
304 Words | 2 Pages
• Applied Managerial Dision Making
Applied Managerial Decision Making MGMT600-1301B-03 Phase 3 individual project Rocklyn Kee Colorado Technical University Online Professor Donald Pratl March 11, 2013 There are 500 employees in the sales force of Company W that are spread out over Southeast, Northeast, West, and Central regions. The company has recently incorporated a new software program in and attempt to monitor how many sales are generated by each employee. It is expected that each month each region should sell the...
940 Words | 3 Pages
• Art Is Life - 352 Words
In the text “Does my head look big in this” by Randa Abdel – Fattah the main character Amal makes a decision to wear a hijab full time “voluntarily”. The decision to wear a hijab changes the way she sees herself, her faith and her culture. Amal’s thoughts on herself change her confidence level, her views on her faith change by the safety and connection with the world around her that she feels when wearing the hijab, which intern helps her identify her identity. The way she sees her culture...
352 Words | 1 Page
• Stat Exam - 1481 Words
CHAPTER 1: INTRODUCTION AND DATA COLLECTION 1. The process of using sample statistics to draw conclusions about true population parameters is called a) statistical inference. b) the scientific method. c) sampling. d) descriptive statistics. ANSWER: a TYPE: MC DIFFICULTY: Easy KEYWORDS: inferential statistics 2. Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are...
1,481 Words | 8 Pages
• Merere - 1225 Words
Villanova University Villanova School of Business Department of Economics and Statistics Mat 1430 Business Statistics Dr. Michael W. Varano Spring 2013 Office: Bartley Hall 1008 All Sections Office Hours: TBA (and/or by appointment) Telephone: (610) 519-7799 e-mail: michael.varano@villanova.edu https://elearning.villanova.edu/webct/...
1,225 Words | 8 Pages
• Regression - 2029 Words
Regression Analysis: A Complete Example This section works out an example that includes all the topics we have discussed so far in this chapter. A complete example of regression analysis. PhotoDisc, Inc./Getty Images A random sample of eight drivers insured with a company and having similar auto insurance policies was selected. The following table lists their driving experiences (in years) and monthly auto insurance premiums. Driving Experience (years) Monthly Auto Insurance Premium 5 2 12 9...
2,029 Words | 7 Pages
• Eco1Isb Introductory Statistics for Business
ECO1ISB Introductory Statistics for Business Assignment 2: Inferential Statistics |Hand out: |Week 7 | |Hand in : |Week 11 | 1. [8 marks] What are parameters and statistics (or estimates)? List two of the parameters and their corresponding statistics that were...
2,080 Words | 9 Pages
• Statistics Final Review Chapters 7,8,9
1. STAT10T 7.2.1-2 (Points: 5.0) Solve the problem. Find the critical value zα/2 that corresponds to a degree of confidence of 91%. a. 1.645 b. 1.75 c. 1.34 d. 1.70 2. STAT10T 7.2.3-2 (Points: 5.0) Solve the problem. The following confidence interval is obtained for a population proportion, p: 0.817 < p < 0.855 Use these confidence interval limits to find the point estimate, . a. 0.833 b. 0.817 c. 0.839 d. 0.836 3. STAT10T 7.2.4-3 (Points:...
1,272 Words | 9 Pages
• Business Statistics - 3178 Words
Case Problem 1: National Health Care Association(Descriptive Statistics) The National Health Care Association is concerned about the shortage of nurses the health care profession is projecting for the future. To learn the current degree of job satisfaction among nurses, the association has sponsored a study of hospital nurses throughout the country. As part of this study, a sample of 50 nurses was asked to indicate their degree of satisfaction in their work, their pay and their opportunities...
3,178 Words | 11 Pages
• Bottling Company Case Study
﻿ Bottling Company Case Study Shelia Larry MAT 300 – Elementary Statistics Dr. Jean Guo March 22, 2015 I am the manager at a major bottling company. Customers have begun to complain that the bottles of our brand of soda contains less than the advertised sixteen (16) ounces of product. My boss has asked me to investigate and solve the problem at hand. I have asked my employees to pull and measure the amount of soda in each of thirty (30) randomly selected bottles off the...
418 Words | 2 Pages
• Legt1710 Essay - 1151 Words
Executive Summary At the request of Crazy John’s M-Tones, Econometric Consulting Services (DECS) has produced a performance report documenting various aspects of Crazy John’s M-tones customer sample population and drawing an inference towards the population by assessing customer base and usage trends. To achieve the task of producing descriptive statistics and graphically representing the sample data we had attained from Crazy John’s M-Tones, DECS tabulated the data in Excel. Through...
1,151 Words | 5 Pages
• July at the Multiplex - 3341 Words
DATE: June 12, 2012 TO: Mr. Plex, Owner, Royal 16 Theater FROM: Team 8 RE: Analysis of Liability for Fraud Based off of your request, we have completed an analysis concerning Royal 16 Theater’s liability for fraud assumed by the customer, Tommy. Please contact us if any additional information is needed. July at the Multiplex Executive Summary What are the standards of selling a service or product so the customer will not get furious? If we tried out best but they are still unsatisfied,...
3,341 Words | 9 Pages
• econometric - 10897 Words
Journal of Econometrics 41 (1989) 205-235. North-Holland TESTING INEQUALITY CONSTRAINTS IN LINEAR ECONOMETRIC MODELS Frank A. WOLAK* Stanford Received lJniversi[v, February Stunford, CA 94305, tiSA 1986, final version received July 1988 This paper develops three asymptotically equivalent tests for examining the validity of imposing linear inequality restrictions on the parameters of linear econometric models. First we consider the model .v = X/3 + e. where...
10,897 Words | 79 Pages
• Practice Quiz - 2562 Words
CHAPTER 1: Introduction MULTIPLE CHOICE 1. The process of using sample statistics to draw conclusions about true population parameters is called a) statistical inference. b) the scientific method. c) sampling. d) descriptive statistics. ANSWER:a 2. Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called a) statistical inference. b) the scientific method. c)...
2,562 Words | 10 Pages
• M N M Project 5
M & M Project Report Lakisha Fields Strayer University Instructor: Professor Heather Booth MAT 300 Elementary Statistics March 10, 2013 * INTRODUCTION: PURPOSE OF REPORT The purpose of this report is to examine the packaging process of M & M candies for a 1.69oz bag. This process is achieved by way of using random sampling to gather data on the number of colored M&M candies (blue, orange, green, yellow, red, brown,) as well as testing the sample proportion /...
612 Words | 2 Pages
• Psyc 1100 Quiz 2 Study Guide
* Descriptive Statistics * What they are (Some examples) * Frequency Distributions * Central Tendency * Mean: Average * Median: Middle Number * Mode: Number that most comes up (rarely used in behavior statistics) * Graphs * Pie Charts * Bar Graphs, etc. * What they’re used for * Descriptive statistics aim to summarize a sample, rather than use the data to learn about...
510 Words | 3 Pages
• Statistics and Golf Ball - 589 Words
Case Study 1: Par, Inc. Par, Inc., is a major manufacturer of golf equipments. Management believes that Par’s market share could be increased with the introduction of a cut-resistant, longer-lasting golf ball. Therefore, the research group at Par has been investigating a new golf ball coating designed to resist cuts and provide a more durable golf. The tests with the coating have been promising. One of the researchers voiced concern about the effect of the new coating on driving distances....
589 Words | 2 Pages
• RossRAssgnWK9spss - 922 Words
﻿ One-Way ANOVA with SPSS Week Nine Assignment By Rasheida Ross ID #A00303403 Rasheida.ross@waldenu.edu Program: PhD in Education Specialization: Special Education Leadership RSCH 8200D: Quantitative Reasoning and Analysis Dr. Flohr John.flohr@waldenu.edu Walden University 11/2/2014 n analysis of variance (ANOVA) is a test which is used to compare the means of two or more independent samples and test to see if the differences between the means are statistically significant. The...
922 Words | 9 Pages
• Qmb Final Exam - 1856 Words
THE UNIVERSITY OF NEW SOUTH WALES SCHOOL OF ECONOMICS ECON1203/ECON2292 (ARTS) QUANTITATIVE METHODS B FINAL EXAMINATION Session 2, 2009 Time allowed: Three hours. Total marks: 60 marks. There are FIVE questions in this examination; each starts on a fresh page. Answer ALL five questions; start each answer on a fresh page. All questions carry equal marks. The value of each sub-question is indicated in brackets. On the front of your answer book, write the number of each question you have...
1,856 Words | 7 Pages
• Math 533 - 2101 Words
Brief Introduction: AJ Davis is a department store chain, which has many credit customers and want to find out more information about these customers. AJ Davis has complied a sample of 50 credit customers with data selected in the following variables: Location, Income (in \$1,000’s), Size (Number of people living in the household), Years (number of years the customer has lived in the current location), and Credit Balance (customers current credit card balance on the store’s credit car, in...
2,101 Words | 10 Pages
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Confidence intervals and prediction intervals from simple linear regression The managers of an outdoor coffee stand in Coast City are examining the relationship between coffee sales and daily temperature. They have bivariate data detailing the stand's coffee sales (denoted by [pic], in dollars) and the maximum temperature (denoted by [pic], in degrees Fahrenheit) for each of [pic] randomly selected days during the past year. The least-squares regression equation computed from their data...
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Statistics in Business Statistics is a mathematical science pertaining to the collection, analysis, interpretation or explanation, and presentation of data. It also provides tools for prediction and forecasting based on data. It is applicable to a wide variety of academic disciplines, from the natural and social sciences to the humanities, government and business ("Statanalysis Consulting", 2013). Statistics is used in decision making that affects our everyday lives. The study of...
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Confidence Intervals and Hypothesis Testing Name: Math 256, Nelson 1. A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation equal to 1.5 deciliters. Find a 95% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks had an average content of 2.25 dl. 2. The heights of a random sample of 50 college students showed a mean of 174.5 centimeters. Assume...
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Your manager has speculated the following: a. the average (mean) annual income was less than \$50,000, b. the true population proportion of customers who live in an urban area exceeds 40%, c. the average (mean) number of years lived in the current home is less than 13 years, d. the average (mean) credit balance for suburban customers is more than \$4300. 1. Using the sample data, perform the hypothesis test for each of the above situations in order to see if there is...
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﻿ Inferential Statistics Jaceilia Ajanaku QNT/561 April 29, 2015 Patricia Towne Inferential Statistics Inferential statistics can be used to qualify certain data analysis figures. These figures can be mostly found in descriptive statistics. As stated in previous research, the situation at hand is a human resource firm being able to acquire new personnel and process them to be ready for employment. The most important issue is the time between dates of hire to the date the personnel actually...
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﻿University of Phoenix Material Basic Concepts in Statistics Complete the following questions. Be specific and provide examples when relevant. Cite any sources consistent with APA guidelines. Question Answer What are statistics and how are they used in the behavioral sciences? Your answer should be 100 to 200 words. Statitics is the idea of collecting data and analysing it in large quantatites. When statistics are used in behavorial sciences it is used for the purpose of dividing into...
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The following report presents a detailed statistical analysis of AJ DAVIS department store customers. Data was collected from a sample of 50 AJ DAVIS credit customers for the purpose of learning more about the customers of AJ DAVIS. The first variable considered is Location, a categorical variable. The three subcategories are Urban, Suburban and Rural. The frequency distribution and pie chart are included. Measures of central tendency and descriptive statistics are not calculated due to the...
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2013/3/31 Introduction: The Nature and Purpose of Econometrics Continuous and Discrete Data  What is Econometrics? Literal meaning is “measurement in economics”.  Definition of financial econometrics: The application of statistical and mathematical techniques to problems in finance and accounting.  Continuous data can take on any value and are not confined to take specific numbers.  Discrete data can only take on certain values, which are usually integers Types of Data...
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Sweetening Statistics Sandeep Agrawal Professor Dr. M. Reza Zomorrodian MAT300 March 12, 2013 Abstract The following assessment investigates the practices involved in this semester’s statistical M&M evaluation. The paper initially describes the individual random samples taken and then combined into the class’ data set. Then the totals, their proportions, and some other descriptive statistics are detailed before examining the confidence intervals for the proportions. The next...
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DEPARTMENT OF SOCIOLOGY, PSYCHOLOGY AND SOCIAL WORK SOCI 1005 (SY16C) -INTRODUCTORY STATISTICS FOR THE BEHAVIOURAL SCIENCES SUMMER SCHOOL 2012/2013- COURSE OUTLINE Lecturer: Ayesha Facey Office: Room 46, Faculty of Social Sciences Office #: 970-6324 E-mail: ayeshafcy@yahoo.com COURSE OBJECTIVE This course aims to introduce students to basic univariate and bivariate statistics. A student who successfully completes this course will possess a...
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Data, Models and Decisions (2012 IMBA FDMS) Homework Assignment VI 2012-11-7 Solve the problems in the POSIDON, INC case module on page 184 of the textbook. [Remark]: You only need to answer the questions, rather than prepare a case write-up. The Excel file “Homework6-1_POSIDON.xls” containing the data for the case has been uploaded to the MBA portal. Finish the following exercise: E1. A study by the Center for Disease Control (CDC) found that 23.3% of adults are smokers and that roughly 70%...
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﻿Felicia Sutton, Lindsey Johnson, Liz Chichester Stat Lab #3 12/17/13 We are trying to determine if double stuffed Oreo cookies actually have twice the filling than regular plain Oreo’s. The Oreo data is quantitative continuous data and we will be using a boxplot to compare the weight of each cookie’s filling. 5.81 – 3.44 = 2.37 2.46/3.44 = .688 .688(100) = 68.8 % The above statistics table shows that there is a 68.8% increase from the plain Oreo filling to...
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5 Step Hypothesis for Regression Team D will conduct a test on the hypotheses : H₀: M₁ ≤ M₂ The null hypothesis states that non-European Union countries (M₁) have a lesser/equal to life expectancy than European Union countries (M₂). H₁: M₁ > M₂ The alternative hypothesis states that non-European Union (M₁) countries have a greater life expectancy than European Union countries (M₂). Team D will conduct research with a level of significance of α = .05 Identify the test statistic:...
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﻿English II End-of-Course Test Constructed Response Lesson Characterization Question From diagnostic test: Based on paragraph 4, what can be inferred about Stepan Arkadyevitch’s character? Use evidence from the selection to support your response. Score Criteria 2 • Analyzes Stepan’s character based on paragraph 4 • Uses at least two inferences from the selection for support • Writes a response that analyzes what the text says explicitly and makes inferences drawn from the text 1 •...
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﻿ HR absence Individual sickness 1.0 Introduction This paper analyzed how different individual sicknesses affect staff performance within K-2 organization. Additionally, the paper also looked at the different causes and the results of the sicknesses in terms of the instance sick days the workers had within the organization. Data was analyzed using descriptive statistics; the standard deviation correlation between variables. A Pivot Table was used to summarize...
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• Hypothesis Testing - 1340 Words
Hypothesis testing I Kevin Soo Outline • • • • Theory and the research process What is a hypothesis? Hypothesis testing Statistical models Theory and the research process Theory • A belief – Can be true or false – P (belief) • A proposed/possible explanation for something – ‘Some students do poorly at statistics because they have less exposure to mathematics’ – ‘Women don’t date me because I’m ugly’ – ‘Manchester United lost the Premier League because they struggled with...
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After completing the "Applying ANOVA and Nonparametric tests" simulation, I realize there were a few things to take into consideration when analyzing a problem. This particular exercise wanted to know the differences and causes of the variation. In order to resolved the solution, an individual or whoever is conducting the analysis will need to know what type of test to used, decide if the null hypothesis should be rejected or not, and make recommendation based on the collected data. Due to...
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Exercise collection I. Use the dataset called “Labour_force.sav” or „Labour_force_data.xls”. In the MS Excel file you find the description of the variables on the worksheet „Source”. Answer the following questions. (Covered topics: tables, frequency-relative frequency, descriptive statistics, estimation, hypothesis tests, stochastic relationships, linear regression analysis) 1. Decide from which aspect (age, monthly gross earnings, mortgage) the people are more homogenous. Explain your...
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﻿ Airport Linear Regression Analysis Larp Wilder Capella University Introduction The data set presented the percentage of flight delay during arrival and departure from 13 airports The information is from the Federal Aviation Administration. The assumption of the data is normally distributed with the level of significance at 5%. The below analysis determines whether there is a positive linear relationship between late arrivals and late departures. Visual displays of data of 13 airport...
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A point estimation is a sample statistic that gives a good guess about a population parameter. In the same way, a point estimate of the mean overpayment is simply a good guess about what the average overpayment for the population is. Investigating all 1,000 claims and obtaining the overpayment amount for each would either be impractical, unfeasible or both. Thus, the auditor deems a sample size of 50 claims to be adequate and sufficiently representative of the entire population. The mean...
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AJ Davis Department Stores - Project Part A, B, and C Stacie Borowicz June 14, 2013 Math 533 Project Part A – Exploratory Data Analysis Credit Balance (\$) Based on a sample of 50 customers, the credit balance for customers of Davis Department stores is on average \$3970.00. Based on the graph, 18 of the 50 sampled fall below and 17 fell above the average. The standard deviation for credit balance is 931.9. Income Annual Income of Davis Department Stores customers range anywhere...
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Gender and age differences affect student's performances Introduction Gender and age difference can e a determining factor in the performance of a student. Although there were other factors that affect the performance of a student, age and gender differences are also important determinants. I compared the performances of students with respect to their ages. Study was done on thirty participants between the ages of twenty and fifty years. I asked students in an Ethics class. A series of...
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Statistics in Business Quantitative Analysis for Business University of Phoenix Tanya Bailey April 22, 2013 Statistics can sometimes be difficult for some individuals. Understanding the concept of statistics, which is known as the science of data, may help a person in the business world. This involves classifying, summarizing, analyzing, collecting, and interpreting numerical information. The information gathered from statistics can help startup companies, and...
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Homicides in Houston, from 1985 to 1994 I. Introduction Houston is the largest city in Texas, world-known for its multi-culture and energy industry. That might be the reason why there is a huge influx of population immigrated there. Such a multi-ethnic population structure not only stimulates a rapid growth of economy in Houston, but also gives rise to some serious social problems. 1.1 Purpose Among diverse social problems, I focus most on the problem of violent crime especially...
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