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Find the service time at the college cafeteria

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Reference no: EM131619942

Question: The service time at the college cafeteria follows exponential with a mean of 2 minutes.

(a) What is the probability that two customers in front of an arriving customer will each take less than 90 seconds to complete their transactions?

(b) What is the probability that two customers in front will finish their transactions so that an arriving customer can reach the service window within 4 minutes?

Reference no: EM131619942

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