Question: An electronic component in a machine can be selected from two firm. The first firm offers that a machine an exponential time to failure distribution

An electronic component in a machine can be selected from two firm. The first firm offers that a machine an exponential time to failure distribution with =0.0002. The second firm offers a machine an weibull distribution with =3,000 and =1/3 What are the mean and variance of the time to failures? Which firm would you prefer and why

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