A new fast food franchise has been started in Baltimore that uses a drive-through window to deliver crab-cake sandwiches. Customers arrive at an average rate of one every 30 seconds. Current service time has averaged 25 seconds with a standard deviation of 20 seconds. A suggested process change, has been tested and shown to change service time to an average of 27 seconds with a standard deviation of 10 seconds. Assume that no customers are blocked or abandon the system.
Will the average waiting time in the queue increase, decrease, or stay the same?
As a result of implementing this change will the average server utilization increase, decrease, or stay the same?
