Mr. Jones is waiting to make a phone call at a train
Chapter , Problem 10(choose chapter or problem)
Mr. Jones is waiting to make a phone call at a train station. There are two public telephone booths next to each other, occupied by two persons, say A and B. If the duration of each telephone call is an exponential random variable with = 1/8, what is the probability that among Mr. Jones, A, and B, Mr. Jones will not be the last to finish his call?
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