(13 points) In order to improve the health of the company's employees, CUHK introduced a tness program for its employees to attend during lunch hour. To evaluate the effectiveness of the program, a random sample of 8 employees were selected and found the number of days they were absent six months before and after the program was introduced. The data are recorder below: CUI-IK wanted to evaluate the effectiveness of the program, so they set up their test hypothesis as follows where ad is the difference after the implementation of program (Le. After Before): Ho: Md 5 0 \"11.11:: > 0 a. Compute the teststatistic. b. At a = 0.05, using the critical value approach can we conclude that the number of absences decreased