I need help answering this discussion board. How can I show if the program helps them lose weight.

1. A researcher wanted to test if an exercise program can significantly help people to lose weight. He had 40 participants in the research. He collected data before the exercise program and after the exercise program. He decided to use one of the statistical techniques he knows. The obtained value of his test was 2.86. The risk level is 0.01. a ) What test did he use? b) cite critical value c) Does the exercise program makes a difference in helping people lose weight? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 14px A E E E E X X2 V X