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Mathematics, 18.02.2020 05:28 kailibug2287
The time until failure of an electronic device has an exponential distribution with mean 15 months. If a random sample of five such devices are tested, what is the probability that the first failure among the five devices occurs a after 9 months? b before 12 months?
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The time until failure of an electronic device has an exponential distribution with mean 15 months....
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