Problem $18-1$ part C $($Algo$)$

An average of $20$ customers arrive at a service center each hour $($Poisson distributed$).$ There are two servers on duty, and each

server can process $25$ customers per hour $($Poisson distributed$).$ Use Table $18-4.$

a$.$ What is the system utilization? $($Round your answer to $2$ decimals.$)$

$$

b$.$ What is the average number of customers in the system $($waiting plus being served$)?($Do not round intermediate calculations.

Round your answer to $3$ decimals.

$L_s$

c$.$ What is the average time customers wait in line for service? $($Do not round intermediate calculations. Round your answer to $3$

decimals.$)$

$W_q$

hours

d$.$ What is the average waiting time for customers who actually have to wait? $($Round your answer to $3$ decimals.$)$

$W_a$