Question: 7.19 Consider a queueing system in which the interarrival times of customers are the thirdorder Erlang random variable with parameter . The time to serve

7.19 Consider a queueing system in which the interarrival times of customers are the thirdorder Erlang random variable with parameter λ. The time to serve a customer is exponentially distributed with parameter μ. What is the expected waiting time of a customer?

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