1. Were the groups in this study independent or dependent? Provide a rationale for your answer. Independent, the outcomes of each subject are independent of eachother. They are male and female groups, and there was no appearant attempt to match eachother on any variable.

2. t = –3.15 describes the difference between women and men for what variable in this study? Is this value significant? Provide a rationale for your answer. t=-3.15 describes the differences between women and men for the mental health variable. It has the smallest p value, at p-0.002 and that is considered significant because the p=0.002 is smaller than alpha that was set at 0.05 for this study. Small p values indicate significant findings.

3. Is t = –1.99 significant? Provide a rationale for your answer. Discuss the meaning of this result in this study. T=-1.99 describes the difference in health functioning between men and women after an MI. t=-1.99 is significant because it’s p value (0.049), is still smaller than alpha that was set at 0.05 for this study. The meaning of this result in this study is that the quality of life measures in regards to health functioning show a significant result. This finding indicates that women had a mean of 17.9 with an sd of 4.1, and men had a mean of 19.3, with an sd of 4.6. Results support the study and findings that, “women rate lower levels in physical and psychological dimensions of quality of life”

4. Examine the t ratios in Table VI. Which t ratio indicates the largest difference between the males and females post MI in this study? Is this t ratio significant? Provide a rationale for your answer.

5. Consider t = –2.50 and t = –2.54. Which t ratio has the smaller p value? Provide a rationale for your answer. What does this result mean?

t= -2.50, p=0.01; t= -2.54, p= 0.007. t=-2.54 has a smaller p value at p=0.007 than t=-2.50 with p=0.01. The smaller p value...

...ElementaryStatistics Chapter 1 Test - Form A
Name:___________________________ Course Number: __________ Section Number: _____
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
1) Define the terms population, sample, parameter and statistic. How does a census compare to a
sample?
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the
question.
Identify the number as either continuous or discrete.
2) The total number of phone calls a sales representative makes in a month is 425.
A) Continuous B) Discrete
3) The number of limbs on a 2-year-old oak tree is 21.
A) Continuous B) Discrete
Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate.
4) The subjects in which college students major.
A) Ratio B) Ordinal C) Nominal D) Interval
5) Amount of fat (in grams) in cookies.
A) Nominal B) Interval C) Ordinal D) Ratio
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Identify the sample and population. Also, determine whether the sample is likely to be representative of
the population.
6) In a poll of 50,000 randomly selected college students, 74% answered "yes" when asked "Do you
have a television in your dorm room?".
Use critical thinking to develop an...

...Statistics – Lab Week 2
Name: __YONATHAN JACK
Math221
Statistical Concepts:
Using MINITAB
Graphics
Shapes of Distributions
Descriptive Statistics
Empirical Rule
Data in MINITAB
MINITAB is a powerful, yet user-friendly, data analysis software package. You can launch MINITAB by finding the icon and double clicking on it. After a moment you will see two windows, the Session Window in the top half of the screen and the Worksheet or Data Window in the bottom half.
Data have already been formatted and entered into a MINITAB worksheet. Go to the eCollege Doc sharing site to download this data file. The names of each variable from the survey are in the first row of the Worksheet. This row has a background color of gray to identify it as the variable names. All other rows of the MINITAB Worksheet represent a certain students’ answers to the survey questions. Therefore, the rows are called observations and the columns are called variables. Included with this lab, you will find a code sheet that identifies the correspondence between the variable names and the survey questions.
Complete the answers below and paste the answers from MiniTab below each question. Type your answers to the questions where noted. Therefore, your response to the lab will be this ONE document submitted to the dropbox.
Code Sheet
Variable Name
Question
Drive...

...QUANTITATIVE METHODS - STATISTICS
-------------------------------------------------
(SUBJECT CODE: STA1114)
-------------------------------------------------
Instructions to Students:
1. Assignment questions consist of:
* Question One - 25%
* Question Two - 25%
2. Assignment question must be combined into ONE (1) booklet, attached with “Assignment Submission Form” as the front cover, enclosed with the “Marking Criteria.” typed with double spacing using Times New Roman font type (Size 12). Submitted booklet must be stapled.
3. Students are to submit their assignment booklet ON or BEFORE 8.00pm, 9th NOVEMBER (WEDNESDAY).
All assignments are to be submitted to CCE (Centre for Continuing Education). NO EXTENSION WILL BE GRANTED. Any assignments submitted after the dateline will be penalized 5 marks per day.
4. Group discussions are encouraged but answers must not give the Examiners reasons to believe that copying of each other’s works has occurred. Copying is a serious offence and could result in a FAIL grade. Originality will be one of the key factors in the awarding of points and grades.
-------------------------------------------------
Question One [25 Marks]
Answer the questions based on the data below.
PRODUCTIVITY BONUS PAYMENT
The production of each manufacturing...

...conceptualized the birth and administered the growth of Arellano University.
This prestigious institution of learning opened in 1938 as the Arellano Law College, named after Cayetano Arellano, first Filipino chief justice. It closed in December 1941 until March 1945 under the Japanese occupation of the Philippines during World War II. At the end of the war, this educational institution reopened in April, 1945 and was renamed as Arellano Colleges offering a two-year preparatory law course and the regular four-year law course, as well as a complete secondary education curriculum.
In June 1945, Arellano Colleges offered a four-year course in education (Bachelor of Science in Education), a two-year teacher training course (Elementary Teacher’s Certificate) and an elementary school training department. Likewise offered were courses in commerce, Foreign Service, and arts and sciences.
A year later, in June 1946, Florentino Cayco, Sr., became the first President of Arellano Colleges. Through his efforts, Arellano Colleges was elevated to, and recognized as, Arellano University on February 22, 1947 by the Department of Education, Culture, and Sports.
It was also in 1947 that the graduate school was organized and authorized to offer a course leading to the degree of Master of Arts in education as a requisite for the grant of university status.
In 1954, Arellano University opened a school of nursing which offered a basic nursing course. In April...

...Trajico, Maria Liticia D.
BSEd III-A2
REFLECTION
The first thing that puffs in my mind when I heard the word STATISTIC is that it was a very hard subject because it is another branch of mathematics that will make my head or brain bleed of thinking of how I will handle it. I have learned that statistic is a branch of mathematics concerned with the study of information that is expressed in numbers, for example information about the number of times something happens. As I examined on what the statement says, the phrase “number of times something happens” really caught my attention because my subconscious says “here we go again the non-stop solving, analyzing of problems” and I was right. This course of basic statistic has provided me with the analytical skills to crunch numerical data and to make inference from it. At first I thought that I will be alright all along with this subject but it seems that just some part of it maybe it is because I don’t pay much of my attention to it but I have learned many things. I have learned my lesson.
During our every session in this subject before having our midterm examination I really had hard and bad times in coping up with this subject. When we have our very first quiz I thought that I would fail it but it did not happen but after that, my next quizzes I have taken I failed. I was always feeling down when in every quiz I failed because even though I don’t like this...

...1. A density curve consists of a straight line segment that begins at the origin (0, 0) and has
slope of 1.
a. Sketch this density curve. What are the coordinates of the right endpoint of the segment?
(Note that the right endpoint should be fixed so that the total area under the curve is 1.
This is required for a valid density curve.)
b. Determine the median, the first quartile (Q1), and the third quartile (Q3).
c. Relative to the median, where would you expect the mean of the distribution to lie?
Explain briefly.
The distribution is skewed left, so the mean will be left of the median.
d. What percent of the observations lie below 0.5? Above 1.5?
2. The following are the salaries of employees in a small business:
15,000 15,000 17,500 23,500 23,750 25,000 26,000 27,500 29,000 45,000
a. Before using your calculator, do you think that the mean or the median for these values
will be higher? Why do you think so?
b. What are the mean and median of the salaries? Was your answer to (a) correct?
c. Find the standard deviation and the IQR of the data
d. Describe the shape of the distribution terms of its overall shape, including outliers and
skewness. Be sure to give the locations of the main features
e. Speculate on the reasons for why the distribution is shaped as it is.
3. The following represents the outcomes of rolling a die 600 times (actually, it was
simulated on the TI83 as follows: RandInt (1,6,600)_L1).
Face
1
2
3 ...

...MAT 308 Name:___________________________
Chp 1-2 Test
100 points
In order to receive full credit, please show all work for every problem. You are welcome to use your calculator, book and notes, but please take this test on your own.
1. In your own words, explain what parameters and statistics are and what the difference is between them. Give an example to clarify. (10 points)
2. According to Consumer Reports, a random sample of 35 new cars gave an average of 21.1 mpg.
What is the variable being studied?
What is the implied population?
What is the sample?
Is the variable qualitative or quantitative?
Is the variable discrete, continuous or neither?
(10 points)
3. A national survey asked 1261 US adult fast-food customers which meal (breakfast, lunch, dinner or snack) they ordered.
What is the variable being studied?
What is the implied population?
What is the sample?
Is the variable qualitative or quantitative?
Is the variable discrete, continuous or neither?
(10 points)
4. Consider a completely randomize experiment in which a control group is given a placebo for congestions relief and a treatment group is given a new drug for congestion relief.
What does it mean that the control group was given a placebo? (4 points)
How could this experiment be made into a double-blind experiment? (4 points)
5. Which technique for gathering data (observational study or...

...cans and found that the arithmetic mean weight was 16.05 ounces. At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
38. A recent article in the Wall Street Journal reported that the 30-year mortgage rate is now less than 6 percent. A sample of eight small banks in the Midwest revealed the following 30- year rates (in percent):
4.8 5.3 6.5 4.8 6.1 5.8 6.2 5.6
At the .01 significance level, can we conclude that the 30-year mortgage rate for small banks is less than 6 percent? Estimate the p-value.
Chapter 11
27. A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. The information is summarized below.
Statistic Men Women
Sample mean 24.51 22.69
Population standard deviation 4.48 3.86
Sample size 35 40
At the .01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
46. Grand Strand Family Medical centre is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. There are two facilities, on in the Little River area, and the other in Murrells Inlet. The Quality Assurance Department wishes to compare mean waiting times for patients in two locations. Samples of waiting times, reported in minutes follow:
Location Waiting time
Little River 31.73 28.77 29.53 22.08 29.47 18.60 32.94 25.18 29.82 26.49...