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Testing of a number of switches finds that in 350,000 hours of total test time, 35 failures occur. It is assumed that the Poisson distribution will...

Testing of a number of switches finds that in 350,000 hours of total test time, 35 failures
occur. It is assumed that the Poisson distribution will govern the probabilities of failure.
a. What is the probability of a single switch operating for 1,000 hours without a failure?
b. What is the probability of a single switch experiencing at least one failure in 1,000 hours?

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Testing of a number of switches finds that in 350,000 hours of total test time, 35 failures
occur. It is assumed that the Poisson distribution will govern the probabilities of failure.
a. What is...

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