Stats 15

File: Deliverya.  Perform an analysis of variance on the data. Assume a significance level of 0.05. Do the experimental data provide evidence that the average operating costs per mile for the three types of minivans are different? Use a p-value approach.b. Referring to part (a), based on the sample data and the appropriate test for multiple comparisons, what conclusions should be reached concerning which type of car the delivery company should adopt? Discuss and prepare a report to the company CEO. Use an α=0.05. c. Provide an estimate of the maximum and minimum difference in average savings per year if the CEO chooses the “best” versus the “worst” minivan using operating costs as a criterion. Assume that minivans are driven 30,000 miles a year. Use a 90% confidence interval.       

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