About: In this assignment, you will examine various scenarios involving a hypothesis test we have been working with called the independent samples ttest. The objective is to understand the statistical process of testing hypotheses and interpreting results. You will analyze provided data and write a report explaining the populations, variables, which one is the independent and dependent variable, and the results of the hypothesis test.
Directions: Select ONE scenarios and complete the following report for each scenario.
 Introduction
 Review the provided data describe the goal of the research including what the independent and dependent variable is. Provide the Null and Research hypothesis based on the data provided.
 Methods

 Describe the data including sample sizes for each group, mean hours for each group, variance, and observable differences
 State that the independent samples ttest was conducted and provide all the important results (tstatistic, pvalue, degrees of freedom)
3. Results

 Interpret the results, is there a statistically significant relationship?
 Do we accept or reject the null hypothesis?
 Are the two variables related to one another?
4. Discussion

 Discuss any potential limitations of the test and results
 Provide some thoughts on why we obtained the results we obtained, consider various logical explanations
Word Count: Each report should be about 300 words or more, giving about 75 to 100 words per section in the directions provided.
Scenarios: Similar to the preplab, and the here are some scenarios of various statistical outputs involving ttests. Select ONE of the following to complete your assignment
TTest Lab Scenario 1: Chores by Gender/Sex
TTest Lab Scenario 2: Number of Energy Drinks by Student Status
TTest Lab Scenario 3: Retired vs NonRetired & Stress Scores
TTest Lab Scenario 4: Working Class vs Middle Class & Hours Spent on Leisure
TTest Lab: Scenario 1
Chores by Gender/Sex
Important: Before completing the scenarios be sure you have completed the prelab and have looked at the directions in the Lab Analysis #1 Assignment.
About: In this scenario the researcher is interested in seeing if there is a difference in hours spent on chores per week based on Gender/Sex. Here are their results! Be sure to look at only the onetailed pvalue results.
Statistical Output
Descriptive Statistics: Hours Spent on Chores per Week by Sex
Samples  N  Mean  Variance 
Males  314  6.4 hours  5.5 
Females  445  7.5 hours  3.7 
Tstatistic Output
Tstatistic  degrees of freedom  OneTailed (Sig.)  TwoTailed (Sig.) 
3.9  757  p = .000052  p = .000105 
If you have selected this scenario, complete the lab analysis #1 based on these outputs. Feel free to copy and paste these outputs onto a word document along with the instructions of Lab Analysis #1 to begin your Lab Analysis.
TTest Lab: Scenario 2
Energy Drinks by Student Status
Important: Before completing the scenarios be sure you have completed the prelab and have looked at the directions in the Lab Analysis #1 Assignment. Remember you just have to choose two scenarios.
About: In this scenario the researcher is interested in seeing if there is a difference in energy drinks consumed per week based on student status (student vs nonstudent). Here are their results! Be sure to look at only the onetailed pvalue results only.
Statistical Output
Descriptive Statistics: Energy Drinks by Student Status
Samples  N  Mean  Variance 
Students  56  1.1  .33 
NonStudents  71  0.25  .65 
Tstatistic Output
Tstatistic  degrees of freedom  OneTailed (Sig.)  TwoTailed (Sig.) 
1.855  125  p = .032976  p = .065952 
If you have selected this scenario, complete the lab analysis #1 based on these outputs. Feel free to copy and paste these outputs onto a word document along with the instructions of Lab Analysis #1 to begin your Lab Analysis.
TTest Lab: Scenario 4
Hours of Leisure by Class
Important: Before completing the scenarios be sure you have completed the prelab and have looked at the directions in the Lab Analysis #1 Assignment.
About: In this scenario the researcher is interested in seeing if there is a difference in hours spent on leisure per week based on Social Class. Here are their results! Be sure to look at only the onetailed pvalue results.
Statistical Output
Descriptive Statistics: Hours of Leisure based on Social Class
Samples  N  Mean  Variance 
Middle Class  503  8.9  6.5 
Working Class  478  7.1 hours  7.8 
Tstatistic Output
Tstatistic  degrees of freedom  OneTailed (Sig.)  TwoTailed (Sig.) 
1.033  979  p = .15093  p = .301859 
If you have selected this scenario, complete the lab analysis #1 based on these outputs. Feel free to copy and paste these outputs onto a word document along with the instructions of Lab Analysis #1 to begin your Lab Analysis.
TTest Lab: Scenario 3
Stress Scores by Retired Status
Important: Before completing the scenarios be sure you have completed the prelab and have looked at the directions in the Lab Analysis #1 Assignment. Remember you just have to choose two scenarios.
About: In this scenario the researcher is interested in seeing if there is a difference in Stress based on retired status (retired vs not retired). Here are their results! Be sure to look at only the onetailed pvalue results only.
Statistical Output
Descriptive Statistics: Stress Scores by Retired Status
Samples  N  Mean  Variance 
Retired  34  13.2  5.6 
Not Retired  55  16.8  7.9 
Tstatistic Output
Tstatistic  degrees of freedom  OneTailed (Sig.)  TwoTailed (Sig.) 
4.901  87  p <.001  p <.001 
If you have selected this scenario, complete the lab analysis #1 based on these outputs. Feel free to copy and paste these outputs onto a word document along with the instructions of Lab Analysis #1 to begin your Lab Analysis.