An organizational psychologist wants to know if workers' health would improve if a company gave workers extra days off. All workers take a standard physical exam twice a year and are given an overall health rating with higher scores indicating better health. The psychologist selected five workers at random, arranged to have them receive an additional 2 days off every month over the period between health exams and then compared the health scores on the two exams. Using the .05 significance level, do the scores in the table below support the notion that having extra days off improves health?

Work	Before	After
A	75	81
B	66	65
C	44	46
D	80	88
E	89	87

Mbefore = 70.80 Mafter= 73.40

SSbefore = 1174.80 SSafter = 1277.20 Mdifference = 2.60 SSdifference = 15.04 Difference = After - Before

1. What is the null hypothesis? 2. What is the research hypothesis?

3. What is the comparison mean?

4. What is the comparison standard deviation?

5. Explain how you found/calculated the comparison mean and the comparison standard deviation. Detail the process (i.e., the steps) in calculating these statistics.

6. What is/are the cutoff(s)?

7. What is the sample score (i.e., the test statistic)?

8. Upload a sketch for this hypothesis test labeling: a) the cutoff(s) b) the rejection region(s) c) the sample score

9. What is your conclusion for this hypothesis test? a. reject the null b. accept the research hypothesis c. accept the null d. fail to reject the null