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Population Mean of Waiting Time Analysis

You are the manager of a restaurant for a fast food franchise. Last month, the mean waiting time at the drive-through window, as measured from the time a customer places an order until the time the customer receives the order, was 3.7 minutes. The franchise helped you institute a new process intended to reduce waiting time. You select a random sample of 64 orders. The sample mean waiting time is 3.57 minutes with a sample standard deviation of 0.8 minute. At the 0.5 level of significance, is there evidence that the population mean waiting time is now less than 3.7 minutes?

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You are the manager of a restaurant for a fast food franchise. Last mnth, the mean waiting time at the drive-through window, as measured from the time a customer places an order until the time the customer receives the order, was 3.7 minutes. The franchise helped you institute a new process intended to reduce waiting ...

Solution Summary

This solution presents the null and alternative hypothesis and calculates the z-test statistic to compare to the p-value. A decision is made to accept or reject the null hypothesis.

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