Oil and lube service claims that their average service time

Reference no: EM13202799

A 15-minute Oil and Lube service claims that their average service time is no more than 15 minutes. A random sample of 37 service times was collected, and the sample mean was found to be 16.5 minutes, with a sample standard deviation of 5.1 minutes. Is there evidence to reject the claim at the alpha = 0.02 level? Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.

Reference no: EM13202799

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