Research has demonstrated that music-based physical training for elderly people can improved balance and walking efficiency and reduce the risk of falls. As part of the training, participants walked in time to music and responded to changes in the music's rhythm during a 1-hour per week exercise program. After 6 months, participants in the training group increased their walking speed and their stride length compared to individuals in the control group. Observe the following data of stride length in inches with a total of 16 people in each condition. Test using a two-tailed test with alpha = .05. The SD of the exercise group is 2.63 and the SD of the control group is 3.27. Exercise group Control group 24 22 26 20 26 21 20 21 22 24 18 16 23 25 25 17 25 24 23 23 17 22 16 17 19 23 23 20 28 23 19 16 5. Would you retain or reject the homogeneity of variance assumption? What is the test statistic? 6. What is the test statistic for the t-test? Did you retain or reject the null? 7. Compute the 95% confidence interval of the difference. 8. Compute and interpret Cohen's D. 9. Write a sentence showing the outcome of the hypothesis test. Make sure you include all relevant information including the effect size