A new program of imagery training is used to improve theperformance of basketball players shooting free-throw shots. Thefirst group did an hour imagery practice, and then shot 30 freethrow basket shots with the number of shots made recorded. A secondgroup received no special practice, and also shot 30 free throwbasket shots. The data is below. Did the imagery training make adifference? Set alpha = .05.
Group 1: 15, 17, 20, 25 26, 27
Group 2: 5, 6, 10, 15, 18, 20
1. You must use all five steps in hypothesis testing:
A. Restate the question as a research hypothesis and a nullhypothesis about the populations.
B. Determine the characteristics of the comparisondistribution.
C. Determine the cutoff sample score on the comparison distributionat which the null hypothesis should be rejected.
D. Determine your sample’s score on the comparisondistribution.
E. Decide whether to reject the null hypothesis.
2. Solve for and evaluate the effect size of this study usingCohen's D.
3. Create a 90% confidence interval for this problem.
