How many machines are waiting for service

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One mechanic services 4 drilling machines for a steel plate manufacturer. Machines break down on an average of once every 4 working days, and breakdowns tend to follow a Poisson distribution. The mechanic can handle an average of two repair jobs per day. Repairs follow a negative exponential distribution.

a) On the average, how many machines are waiting for service?

The average number of machines waiting for service is ______

(Round your response to three decimal places.)

b) On the average, what is the waiting time to be serviced?

The average waiting time to be serviced is __________ days. (Round your response to two decimal places.)

Reference no: EM132139943

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