Determining Whether Complaints Are Lower After a Training Program The Newtower Department Store has experienced a 3.2%
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Determining Whether Complaints Are Lower After a Training Program The Newtower Department Store has experienced a 3.2% rate of customer complaints and attempts to lower this rate with an employee training program. After the program, 850 customers are tracked and it is found that only 7 of them filed complaints.
a. Assuming that the training program has no effect, find the mean and standard deviation for the number of complaints in such groups of 850 customers.
b. Based on the results from part (a), is the result of seven complaints unusual? Does it seem that the training program was effective in lowering the rate of complaints?
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