In an $\frac{M}{M^{{?}^{?}}}$ queueing system, the arrival rate is $7$ customers per hour and the service rate is $9$ customers per hour.

a$.$ What is the utilization?

Note: Round your answer to $3$ decimal places.

Answer is complete but not entirely correct.

b$.$ What is the expected number of customers in the system $(L)?$

Note: Round your answer to $3$ decimal places.

Answer is complete but not entirely correct. c$.$ What is the expected waiting time in the system $(W)?$

Note: Express the waiting time in hours, round your answer to $3$ decimal places.

Expected waiting time

d$.$ What is the expected number of customers in the queue $(Lq)?$

Note: Round your answer to $3$ decimal places.

Expected number of customers

e$.$ What is the expected waiting time in the queue $(Wq)?$

Note: Express the waiting time in hours, round your answer to $3$ decimal places.Wk Qu$.13-02$ In an M$/$M$/1$ queueing system... In an $($M$)/($M$^(^()))$ queueing system, the arrival rate is $6$ customers per hour and the service rate is $8$ customers per hour.