Mathematics, 18.06.2020 20:57, djmelodiedaniels
An office manager has implemented an incentive plan that she thinks will reduce the mean time required to handle a customer complaint. The mean time for handling a complaint was 30 minutes prior to implementing the incentive plan. After the plan was in place for several months, a random sample of the records of 38 customers who had complaints revealed a mean time of 28.7 minutes with a standard deviation of 3.0 minutes.(a) Give a point estimate of the mean time required to handle a customer complaint. 28.7(b) What is the standard deviation of the point estimate given in (a)? 0.49(c) Construct a 95% confidence on the mean time to handle a complaint after implementing the plan. (27.451, 29.949)Interpret the confidence interval for the office manager.(d) Is there sufficient evidence that the incentive plan has reduced the mean time to handle a complaint? (Use ? = .05.)I NEED P VALUE AND Z VALUE HELPP value=z =
Answers: 3
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An office manager has implemented an incentive plan that she thinks will reduce the mean time requir...
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