Consider a two-server waiting line with a mean arrival rate of 40 per hour and a mean service rate of 60 per hour for each server.
a. What is the probability that both servers are idle?
b. What is the average number of cars waiting for service?
c. What is the average time waiting for service?
d. What is the average time in the system?
e. What is the probability of having to wait for service?

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Multiple Server Queueing Model Lambda Mu Number of scrvers 40.000 60.000 2 Probability system is empty Average number in queue Average number in system Average time in queue Average time in system Probability arrival must wait 0.500 0.083 0.750 0.002 0.019 0.167