A company studied two programs for compensating its sales staff. Nine salespeople participated in the study. In program a sales people were paid a higher salary, plus a small commission for each item they sold. In program b they were paid a lower salary with a larger commission. Following are the amounts sold, in thousands of dollars. for each salesperson on each
Program-

Can you conclude that the mean sales differ between the two programs? Use the a = 0.05 level of significance.

Salesperson Program 1 2 3 4 5 67 8 9 53 24 36 28 31 61 58 38 72