Statistics- A room is lit by 10 light bulbs. The lifetime, X
QUESTION
A room is lit by 10 light bulbs. The lifetime, X, of the light bulbs follows an exponential distribution with mean μ = 1000 hours. In a time window of 2000 hours:The light bulbs are replaced immediately upon failure.what is the expected number of failures?what is the probability that there will be more than 5 failures?what is the probability that there will be less than 15 failures?The light bulbs are not being replaced upon failure.what is the expected number of failures?what is the probability that there will be more than 5 failures?what is the probability that there will be less than 15 failures?
ANSWER:
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