In an $\frac{M}{M^{{?}^{?}}}$ queueing system, the arrival rate is $6$ customers per hour and the service rate is $8$ customers per hour.

a$.$ What is the utilization? $($Round your answer to $3$ decimal places.$)$

Utilization

b$.$ What is the expected number of customers in the system $($L$)?($Round your answer to $3$ decimal places.$)$

Expected number of customers

c$.$ What is the expected waiting time in the system $($W$?($Express the waiting time in hours, round your answer to $3$ decimal places.$)$

c$.$ What is the expected waiting time in the system $($W$)($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 $(Lq?($Round your answer to $3$ decimal places.$)$

Expected number of customers

e$.$ What is the expected waiting time in the queue $(Wq)?($Express the waiting time in hours, round your answer to $3$ decimal places.$)$

Expected waiting time