Determine the mean waiting time in the queue

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Reference no: EM131406845

A ‘money shop' tax adviser operates a ‘no appointments necessary' system whereby customers arrive at the shop when they wish and wait for a consultation. The adviser works alone and the times she takes to serve customers vary exponentially with amean of 15 minutes. Customer arrivals are distributed according to the Poisson distribution with a mean of 2.5 per hour.

(a) Work out the traffic intensity of the system.

(b) There are four chairs that customers can sit on while waiting for a consultation. Find the probability that one or more customers will have to stand while they are waiting.

(d) Determine the mean waiting time in the queue.

Reference no: EM131406845

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