You are the manager of a restaurant for a ~ fast-food franchise, last

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.
a. At the 0,05 level of significance, is there evidence that the
population mean waiting time is different from 3.7 minutes?
b. Because the sample size is 64, do you need to be concerned
about the shape of the population distribution
when conducting the f test in (a)? Explain.

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