Mathematics, 23.11.2019 00:31 ashiteru123
If the probability that a fluorescent light has a useful life of at least 500 hours is 0.8, find the probability that among 20 such lights
a) exactly 18 will have a useful life of at least 500 hours
b) at least 15 will have a useful life of at least 500 hours
Answers: 1
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If the probability that a fluorescent light has a useful life of at least 500 hours is 0.8, find the...
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