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 0.05 level of significance, is there enough evidence that the population mean waiting time is now less than 3.7 minutes? Show your work.