It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of three groups: Members of Group 1 will constitute the control group and not be assigned any walking. Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. Members of Group 3 will walk from 7:00 to 8:00 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale. This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy). The researcher will also record the number of hours that each participant spent sitting in a typical work day (as the covariate).
Data set: Ch 06 – Exercise 06B.sav

Codebook
Variable: Group
Definition: Walking group assignment
Type: Categorical (1 = No walking, 2 = Walking: 30 Minutes, 3 = Walking: 60 minutes)
Variable: Energy
Definition: Acme End-of-the-Day Energy Scale
Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)
Variable: Sitting
Definition: Mean number of hours sitting per day
Type: Continuous
a. Write the hypotheses.
b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.
c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).
d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.