Customer is exponentially distributed

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Consider a post office that is run by two clerks. Suppose that when Mr. Smith enters the post office, he discovers that Mr. Jones is being served by one of the clerks and Mr. Brown by the other. Suppose also that Mr. Smith is told that his service will begin as soon as either Jones or Brown leaves. If the amount of time that the clerk I spends with a customer is exponentially distributed with mean 1/lambda_1, I = 1, 2, what is the probability that Mr. Smith is not, the last one to leave the post office?

Reference no: EM131128395

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