Question: To assess the effect that chocolate may have on attitude over time, a researcher recruits a group of participants to complete the Acme Attitude Survey

To assess the effect that chocolate may have on attitude over time, a researcher recruits a group of participants to complete the Acme Attitude Survey (AAS), which renders a 0 to 100 score (0 = Very bad attitude . . . 100 = Very good attitude). After giving the pretest, the researcher gives each participant a large bar of chocolate. The researcher read-ministers the AAS three more times: 5 minutes after the participant eats the chocolate, 1 hour later, and 4 hours later.
Data set: Ch 09 – Exercise 10A.sav
Codebook
Variable: ID
Definition: Participant ID
Type: Alphanumeric
Variable: Attitude_0
Definition: Attitude before eating chocolate (baseline)
Type: Continuous
Variable: Attitude_1
Definition: Attitude 5 minutes after eating chocolate
Type: Continuous
Variable: Attitude_2
Definition: Attitude 1 hour after eating chocolate
Type: Continuous
Variable: Attitude_3

Definition: Attitude 4 hours after eating chocolate
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.

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a H 0 Chocolate has no effect on attitude H 1 Chocolate has an effect on attitude b Tests the null hypothesis that the error covariance matrix of the orthonormalized transformed dependent variables is ... View full answer

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