Given: Model 1 , per hour.

a)Measure the average queue length.

b)Measure the average number of customers in the service system.

c)Measure the average time that customer wait.

d)Measure the average time that customer is in the system.

e)Measure the probability that one or more customer is in the system.

4. If customer arrive at a single drive-in window at a local bank one every four minutes on the average, and if you can serve customers in three minutes on the average:

1. How long should customers expect to be at the bank facility on the average?
2. How many cars would we expect to be in the drive-in facility on the average?
3. What is the probability that four or more cars will be in the drive-in facility?

2 = 7 perhour = U = 10