This question

You can use the template file Q.xlsx provided here to help solve this question. The drive-thru window at Hokie Burger requires 2.3 minutes on average to process an order with a standard deviation of 2 minutes. Cars arrive at the window at a rate of 21 per hour. (a) On average, how many cars are waiting to be served? (Round your answer to four decimal places.) 805 cars (b) On average, how long (in minutes) will a car spend in the service process? 2.304 Z minutes (c) Suppose Hokie Burger can install an automated drink-dispensing device that would reduce the standard deviation of the service time to 1 minute. How would your answers to the previous questions change? (Give your average service time in minutes. Round your answers to four decimal places.) The average number of cars waiting to be served {dropsto v| A {2.7807 % =. The average time a car spends in the service process |dropsto | } |2.298 ] JY minutes