You are the manager for a fast-food restaurant. You want to see if the mean waiting time at a drive-through window from the time a customer places an order until the time the customer receives the order has changed from its previous value of 8 minutes. You select a random sample of 16 orders and obtain a mean waiting time of 7.4 minutes and a sample standard deviation of 1.3 minutes. What are the null and alternative hypotheses? Ho: H = 7.4 minutes HA: J