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16-12-2022
Mathematics

Answered

) The time (in hours) required to repair a machine follows an exponential distribution, and the mean repair time is 2 hours. (a) (5 points) What is the probability that a repair time exceeds 2 hours? (b) (10 points) If 5 of these machines are selected, what is the probability that at most 3 have already finished repairing at the end of 2 hours?

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