Find probability of battery failure occurring in operation


A flashlight contains two batteries each having an MTTF of 5 operating hours with constant failure rate. (a) What is the probability of battery failure occurring within the first 2 hours of operation? (b) If failed batteries are immediately replaced, what is the probability of more than one failure occurring during the first 5 hours of operation? (c) Would you expect batteries to have a constant failure rate?

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Mechanical Engineering: Find probability of battery failure occurring in operation
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