Models This set of problems helps understand and practice the M/M/C waiting line model. In general, you need to use the Excel spreadsheet from blackboard to find the answers. The assignment is graded on effort and completion but for full credit you need to show your work by adding a screen shot of your Excel spreadsheet for each question. A Fast-Food Restaurant Consider a drive-through window at a fast-food restaurant. Customers arrive at the rate of 25 per hour. The drive-through window is staffed with one employee, who can serve one customer every two minutes. Assume Poisson arrival and exponential service rates. Question: 1-a) What is the average utilization of the employee? Answer: 1-b) What is the average number of customers in the system (waiting and being serviced)? Answer: 1-c) What is the average time a customer spends in the system? Answer: 1-d) What is the average waiting time a customer spends in line (before being serviced)? Answer: 1-e) What is the stuerage number of customers in line