9. After a successful run, Mike Carr, the owner of Mike's car wash on State Road 23 decides to start a detailing facility next to the automatic car wash station. He is planning to employ 6 people to detail cars and thinks that it will take the people 45 minutes on average to detail cars, He is hoping that 4 cars per hour will come over to be detailed. a. What is the average number of cars in line? b. What is the average time waiting in line? c. What is the average number of cars in the system? d. What is the average time spent in the system? e. What is the average waiting time for a car? f. What is the average number of cars being served in the system? g. What is the probability of waiting in line