Math 533 Project Part B In regards to the dataset from AJ Department store‚ your manager has speculated the following: the average (mean) annual income is less than $50‚000‚ the true population proportion of customers who live in an urban area exceeds 40%‚ the average (mean) number of years lived in the current home is less than 13 years‚ the average (mean) credit balance for suburban customers is more than $4300. Part 1. Using the sample data‚ perform
Premium Statistical hypothesis testing Statistics Statistical inference
Course Project Part B a. the average (mean) annual income was less than $50‚000 Null and Alternative Hypothesis H0: mu= 50 (in thousands) Ha: mu<50 (in thousands) Level of Significance Level of Significance = .05 Test Statistic‚ Critical Value‚ and Decision Rule Since alpha = .05‚ z<-1.645‚ which is lower tailed Rejection region is‚ z<-1.645 Calculate test statistic‚ x-bar=43.74 and s=14.64 Z=(43.74-50)/2.070=-3.024 2.070 is calculated by: s/sq-root of
Premium Statistical hypothesis testing Statistics Null hypothesis
Problem N°1 1.Formulate the null and alternative hypotheses. Null Hypothesis: The average (mean) annual income was greater than or equal to $50‚000 H_0: μ≥50000 Alternate Hypothesis: The average (mean) annual income was less than $50‚000. H_a: μ 30 we will use the z-test. As Ha:μ0.40 the‚ test is a right tailed z-test. The critical value for significance level‚ α=0.05 for a right tailed z-test is given in the table as: 1.645. Decision Rule: Reject H_0‚if z>1.645 3. Calculate the test
Premium Statistical hypothesis testing Null hypothesis
First chart up is the variable location. Three categories are listed in the charts. Frequency Distribution: Location Frequency Urban 21 Suburban 15 Rural 14 As the Pie Chart above shows the majority of the customers comes from the rual areas totaling 42% The Second will be the size chart. This will measure tendency‚ variation‚ mean‚ median and mode. Descriptive Statistics: Size Mean 3.42 Standard Error 0.24593014 Median 3 Mode 2 Standard Deviation 1.73898868 Sample Variance
Premium Standard deviation Variance Normal distribution
Alright i’m not putting a lot of detail math is math okay. look this are the four symbols %X +- okay . Also to continue my Math course go to Cool Math Games. Punctuaintion . Declarative is stating something. ? Intterrogative is stating a question ! Exclamatory means sentence with expression . is stating a command. Grammar Parts of speech NOUNS Person place or thing PRONOUNS I you they ADJECTIVES Happy more these INTERJECTIONS OUCH! OW! DARN! PREPOSITIONS
Premium Grammar Noun Sentence
Table of Contents Model A The very first differential equation that one typically encounters is the equation that models the change of a population as being proportional to the number of individuals in the population. In symbols‚ if P(t) represents the number of individuals in a population at time ‚ then the so called called exponential growth model is: Recall that the general
Premium Population ecology Logistic function Population
Graded Assignment Honors Project: Group Comparisons You are a statistician hired by a company owner for data analysis of employee records. For your first assignment‚ the owner wants you to find and compare data for full-time employees in the sales department and full-time employees in the advertising department. |Name: fernando pirela |Date: 05/26/12 | |Score
Premium Standard deviation Statistics Arithmetic mean
PROJECT C MATH 533 INSTRUCTOR Prof AMIR SADRAIN 1. Generate a scatterplot for CREDIT BALANCE vs SIZE Regression Analysis: Credit Balance ($) versus Size 2. Determine the equation of the "best fit" line‚ which describes the relationship between CREDIT BALANCE and SIZE. There is a slight positive relationship between credit balance and size The regression equation is Credit Balance ($) = 2591 + 403 Size 3. Determine the
Premium Regression analysis Statistics
Project Part C Summary Report Management at the A. J. Davis company wishes the business to retain a competitive edge in the marketplace; ergo‚ they had statistical data collected regarding a selection of their customers who carry credit with the corporation. Based upon studies conducted on this data‚ it can be stated with a high degree of confidence that relationships do exist between certain discreet portions of the information gathered. Household Size vs. Credit Balances Predictably‚ the
Premium Regression analysis Statistics
HRM 533 : INTRODUCTION TO HRM INDIVIDUAL ASSIGNMENT REQUIREMENT Question 1: Describe the major types of HRM activities. Which is the most important? Why? The major types of HRM activities:- 1. Payroll Handling compensation concerns is a chief duty of the HR department. Processing payroll accurately and on time is of great importance to everyone at the company. The main types of compensation that an HR professional deals with are guaranteed pay and variable pay. Guaranteed pay is an employee’s
Premium Human resource management Employment