3.1.13 Assigned Media College students and surfers Rex Robinson and Sandy Hudson collected data on the self-reported number of days surfed in Longboard: 14, 22, 16, 17, 7, 12, 10, 7, 9, 22, 14, 6, 21, 12, 18, 8, Full data set 17, 22, 19, 4, 15, 7, 22, 21, 21, 14, 4, 19, 16, 16 Shortboard: 17, 13, 15, 18, 17, 16, 8, 6, 19, 16, 8, 8, 6, 16, 9, 8, 7, 12, 7, 15, 4, 18, 7, 6, 20, 10, 20, 16, 16, 15 a. Compute the means for both longboards and shortboards. The mean for longboards is 14.4 days. (Round to one decimal places as needed.) The mean for shortboards is 12.4 days. (Round to one decimal places as needed.) Fill in the correct answer below. So longboarders tend to go surfing more. b. Compute the standard deviation of both longboards and shortboards. The standard deviation for longboards is days. (Round to one decimal places as needed.)