Q6. Suppose there is a two-channel operation with two service windows and two employees. The employee stationed at each window fills the order and takes the money from customers arriving at the window. The average service time for this alternative is 2 minutes for each channel. Answer the following questions and recommend an alternative design for the fast-food franchise:

a. b. c. d. e.

What is the probability that no cars are in the system? What is the average number of cars waiting for service? What is the average number of cars in the system? What is the average time a car waits for service?

What is the probability that an arriving car will have to wait for service?