$3$

$?$

$6.$ A single$-$channel queuing system has an average service time of $16$ minutes per customer, which is exponentially distributed. The manager is considering converting to a system with a constant service time of $16$ minutes through automation. The arrival rate will remain the same. The effect will be to:

utilization $=$ Arivce nime $=\frac{Fm}{20p}$

a$)$ increase utilization

b$)$ decrease utilization

c$)$ increase the average waiting time

d$)$ decrease the average waiting time

e$)$ have no effect since the service time is unchanged