A health and fitness club instructor's claims that his 3 months special exercise program will significantly reduce weight (in kg). A random sample of 12 persons was selected and these persons were put on the exercise program for 3 months. The weight of each person before and after the 3 months period are analyzed and illustrated in the following output. Std. Error Mean Mean N Std. Deviation 6.095 1.759 Pair 1 Before 86.58012 After 82.973 12 2.954 AL Paired Differences Sig. (2- tailed) t df 95% Confidence Interval of the Difference Std. Mean Deviation Std. Error Mean Lower Upper Before - After B 6.858 1.980 X Y 1.8221 11 .096 a) Identify the statistical analysis used for this study. b) Find the value of A and B. (1 mark) (3 marks) c) Construct a 95% confidence interval for the mean difference in weight before and after the 3 months exercise program. (5 marks) a) Based on the confidence interval in c), can it be concluded that attending the 3 months exercise program will significantly reduce the weight? Give a reason to support your answer. (1 mark)