15.68 Learning to Sell In Exercise 11.59, you compared the numbers of sales per trainee after completion of one of four different sales training programs (sec data set EX1159). Six trainees completed training program 1, eight completed 2, and so on. The numbers of sales per trainee are shown in the table:

a. Do the data present sufficient evidence to indicate that the distribution of number of sales per trainee differs from one training program to another? Test using the appropriate nonparametric test.

b. How do the test results in part a compare with the results of the analysis of variance F test in Exercise 11.59?

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Training Program 1 2 3 4 78 99 84 86 86 90 92 93 69 94 182 74 81 87 63 80 71 83 65 78 86 73 85 79 97 73 91 70 Total 482 735 402 588