In an $\frac{M}{M^{{?}^{?}}}$ queueing system, the arrival rate is $8$ customers per hour and the service rate is $11$ customers per hour.

a$.$ What is the utilization?

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

Utilization

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

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

Expected number of customers

c$.$ What is the expected waiting tim in the system $(W?$

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

Expected waiting time

$0\mathrm{.}242$