Steady-state probabilities

Reference no: EM131005885

Consider a single-server queue with Poisson arrivals and exponential service times having the following variation: Whenever a service is completed a departure occurs only with probability α. With probability 1 - α the customer, instead of leaving, joins the end of the queue. Note that a customer may be serviced more than once.

(a) Set up the balance equations and solve for the steady-state probabilities, stating conditions for it to exist.

(b) Find the expected waiting time of a customer from the time he arrives until he enters service for the ?rst time.

(d) What is the expected amount of time that a customer spends in service (which does not include the time he spends waiting in line)?

Reference no: EM131005885

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