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Suppose the lifetime in months of an engine, working under hazardous conditions, has an Exponential distribution with a mean of 5 months. Suppose such an

Suppose the lifetime in months of an engine, working under hazardous conditions, has an Exponential distribution with a mean of 5 months. Suppose such an engine is termed successful if its lifetime exceeds 10 months. In a sample of to engines, determine the probability of at least 2 successful engines. Note: Please round the answerto four decimal places. 0 0.4330 0 0.4030 O 0.4003 0 0.4300

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