Mathematics, 15.04.2020 03:07 kam3864
Suppose that the time (in hours) required to repair a machine is an exponentially distributed random variable with mean 1/0.41/0.4. What is (a) the probability that a repair time exceeds 33 hours? (b) the conditional probability that a repair takes at least 1010 hours, given that it takes more than 99 hours?
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