The Zzzleep Zzzound app provides audio selections (e.g., gentle rain, ocean waves, soothing music) to help induce peaceful sleep. During the night, the app uses the camera and motion sensor to gather sleep data. If the user wakes during the night, the app senses it and plays the selected sound for 10 minutes. For the first week, the app runs without any audio to gather baseline data. Once a week, the software transmits the mean sleep time per night for that week to the sleep researcher’s database.
Data set: Ch 09 – Exercise 09A.sav
Codebook
Variable: Cell Phone
Definition: Cell phone number
Type: Alphanumeric
Variable: Sleep1
Definition: Mean sleep minutes per night for Week 1 (baseline)
Type: Continuous
Variable: Sleep2
Definition: Mean sleep minutes per night for Week 2
Type: Continuous
Variable: Sleep3
Definition: Mean sleep minutes per night for Week 3
Type: Continuous

Variable: Sleep4
Definition: Mean sleep minutes per night for Week 4
Type: Continuous
a. Write the hypotheses.

b. Run the criteria of the pretest checklist (Mauchly’s test of sphericity) and discuss your findings.
c. Run the ANOVA repeated measures and document your findings (means and Sig. [p value]), graphical plot, and hypothesis resolution.
d. Write an abstract under 200 words detailing a summary of the study, the ANOVA repeated-measures test results, hypothesis resolution, and implications of your findings.