20. A beer store wanted to test the difference on drinking habits between a younger group of 21-30 years old (Group1; n=8) to and an older group of 50 to 60 years old (Group 2; n=10). The SS for the younger group was 3748 and the mean number of drinks was 45; and the SS for the older group was 4034 and the mean was 55. The store took a survey of beers per year each person had in both groups and found the following data: 21-30 group 50-60 group 50 35 17 64 25 39 88 75 53 61 62 89 36 45 29 35 29 78 a. State the hypotheses of the study. b. Find the critical t value for this study at an alpha level at a=.05. c. Compute the independent t test d. If significant, perform a percentage of variance test