Arrival rate and service times are exponentially distributed

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Reference no: EM131225670

Automobiles arrive at a drive-thru window at the rate of 4 every 10 minutes. The average service time is 2 minutes. The Poisson distribution is appropriate for the arrival rate and service times are exponentially distributed.

a) What is the average time a car is in the system?

b) What is the probability that there are exactly 2 cars in the system?

c) By how much would your answer to part (a) be reduced if a second drive-thru window, with its own server, were added?

Reference no: EM131225670

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