5. Learning to Sell To study the effects of four training programs on the sales abilities of their sales personnel, four equal-sized groups of employees were each subjected to a different sales training program. Because there were some dropouts during the training programs due to illness, vacations, and so on, the number of trainees completing the programs varied from group to group. At the end of the training programs, each salesperson was randomly assigned a sales area from a group of sales areas that were judged to have equivalent sales potentials. The sales made by each of the four groups of salespeople during the first week after completing the training program are listed in the table:

Analyze the experiment using the appropriate method.
Identify the treatments or factors of interest to the researcher and investigate any significant effects. What are the practical implications of this experiment? Write a paragraph explaining the results of your analysis.

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Training Program 1 2 3 4 78 99 74 81 84 86 87 63 86 90 80 71 92 93 83 65 69 94 78 86 73 85 79 97 91 22 73 70 Total 482 735 402 588