You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at the drive-through window for branches in your geographical region, as measured from the time a customer places an order until the time the customer receives the order, was 3.7 minutes. 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. What does the hypothesis test result tell you? A. There is sufficient evidence indicating that the mean waiting time of customers at the drive-through window is significantly greater than 3.7 minutes.
You are the manager of a restaurant for a fast-food franchise. Last month, the
A. There is sufficient evidence indicating that the mean waiting time of customers at the drive-through window is significantly greater than 3.7 minutes.
B. There is sufficient evidence indicating that the mean waiting time of customers at the drive-through window is significantly lesser than 3.7 minutes.
C. There is no sufficient evidence to show that the mean waiting time of customers at the drive-through window is significantly different from 3.7 minutes.
D. There is sufficient evidence to show that the mean waiting time of customers at the drive-through window is significantly different from 3.7 minutes.
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