Paired T-Test and CI: Before, After Paired T for Before - After N Mean StDev SE Mean Before 13 182.?7 18.52 5.14 After 13 139.38 16.72 4.64 Difference 13 D 3.82 E T-Test of mean difference = 0: T-Value = T In a study on the effectiveness of certain exercises in weight reduction (in kilogram), a group of 13 persons were engaged in those exercises for one month. The weights before and after engaging in those exercises were recorded and analysed. The Minitab output of the study is as given below. Assume that the population distributions are approximately normally distributed, answer the questions below. a)Find the missing values of E and T in the output. [3 marks) b) Is there enough evidence at 5% signicance level to conclude the effectiveness of those exercises in weight reduction