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Module 10 Assignment-Ch 9-Experiments S24 online
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Module 10 Assignment: Hypothesis Testing for the Population Mean
The purpose of this activity is to give you guided practice in going through the process of a t-test for the population mean, and teach you how to carry out this test using statistical software.
Background:
A group of 75 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have in a typical week. The file containing the data is linked below. The purpose of this study  was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the mean number of alcoholic drinks that students at his college have in a typical week differs from the mean of U.S. college students in general, which is estimated to be 4.73.
Question 1:
Let ÎĽ be the mean number of alcoholic beverages that students in the college drink in a typical week. State the hypotheses that are being tested in this problem.
Question 2:
Here is a histogram of the data. Can we safely use the t-test with this data?
Instructions
Click on the link corresponding to your statistical package to see instructions for completing the activity, and then answer the questions below.
R | StatCrunch | Minitab | Excel | TI Calculator
Question 3:
State the test statistic, interpret its value and show how it was found.
Question 4:
Based on the P-value, draw your conclusions in context.
Question 5:
What would your conclusions be if the dean of students suspected that the mean number of alcoholic drinks that students in the college consume in a typical week is lower  than the mean of U.S. college students in general? In other words, if this were a test of the hypotheses:
H 0 : ÎĽ = 4.73 drinks per week
H a : ÎĽ < 4.73 drinks per week
Question 6:
Now suppose that instead of the 75 students having been randomly selected from the entire student body, the 75 students had been randomly selected only  from the engineering classes at the college (for the sake of convenience).
Address the following two issues regarding the effect of such a change in the study design:
a. Would we still be mathematically justified in using the T-test for obtaining conclusions, as we did previously?
b. Would the resulting conclusions still address the question of interest (which, remember, was to investigate the drinking habits of the students at the college as whole)?
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Module 10 assignment: what’s empowerment got to do with it, preparation.
Contemporary companies are spotlighted as “best places to work” and their employee motivation practices are openly discussed. For example, Google, Southwest Airlines, and Zappos all claim that “empowering their employees” is the reason that their workforce is so dedicated and highly motivated.
Read the article “ Motivating Employees Has Everything To Do With Giving Them Feelings Of Ownership ” from Forbes Magazine.
After reading the article, you are ready to begin the assignment:
- Research employee motivation and contemporary companies by choosing a company known to be a “great place to work” as the focus of your written assignment. If you are not certain which companies meet this criteria, you can start at one of these websites: GlassDoor or Best Places to Work . Forbes Magazine and Indeed.com also gather data on employee satisfaction.
- Once you have selected the company, summarize the key components or characteristics of your selected company’s employee motivation strategy or practice.
- Compare the strategy or practice used by the company to one of the theories presented in the module readings (i.e. Maslow’s hierarchy of needs, ERG, Herzberg’s Two-Factor, Theory X and Theory Y Theory, Theory Z, Equity Theory, etc.). Be specific when you make this comparison, and be aware of the fact that you may see elements of more than one theory being put into practice.
- After you have studied how your chosen company keeps its employees motivated and creates a great place to work, summarize which theory would most motivate you and why.
- Revision and adaptation. Authored by : Linda Williams and Lumen Learning. License : CC BY: Attribution
- Whats Empowerment Got to Do With It? Essay Assignment Module - 10 Motivating Employees. Authored by : Betty Fitte. Provided by : Tidewater Community College. License : CC BY: Attribution
COMMENTS
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A group of 75 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have in a typical week. The file containing the data is linked below. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students ...
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Once you have selected the company, summarize the key components or characteristics of your selected company's employee motivation strategy or practice. Compare the strategy or practice used by the company to one of the theories presented in the module readings (i.e. Maslow's hierarchy of needs, ERG, Herzberg's Two-Factor, Theory X and ...
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