A teaching assistant collected data from students in one of her classes to investigate whether study time per week (average number of hours) differed between students in the class who planned to go to graduate school and those who did not. Complete parts (a) through (c). LOADING... Click the icon to view the data. a. Find the sample mean and standard deviation for each group. Interpret. Find the sample mean for students who planned to go to graduate school. x overbar 1equals 11.57 (Round to the nearest hundredth as needed.)Graduate school: 14, 7, 15, 10, 5, 5, 2, 3, 12, 16, 15, 39, 8, 14, 10, 19, 3, 23, 15, 5, 5 No graduate school: 6, 8, 16, 6, 5, 13, 10, 10, 11, 5