In a Study of Effectiveness of Physical Exercise on Weight $\alpha = 0.02 .$

question 10

Essay

In a study of effectiveness of physical exercise on weight loss, 20 people were randomly selected to participate
in a program for 30 days. Test the claim that exercise had no bearing on weight loss. Assume the samples are
random and dependent, and the populations are normally distributed. Use $\alpha = 0.02 .$ $\begin{array}{l|c|c|c|c|c|c|c|c|c|c|}\text { Weight before Program } &178&210&156&188&193&225&190&165&168&200\\\text { (in pounds) }\\\hline \text { Weight after Program } &182&205&156&190&183&220&195&155&165&200\\\text { (in pounds) }\\\end{array}$ $\begin{array}{l|c|c|c|c|c|c|c|c|c|c|}\text { Weight before Program } &186&1725&166&184&225&145&208&214&148&174\\\text { (in pounds) Con't }\\\hline \text { Weight after Program } &180&173&165&186&240&138&203&203&142&174\\\text { (in pounds) Con't }\\\end{array}$