The life (in hours) of a computer processing unit (CPU) is modeled by a Weibull distribution with parameters B=3 and 6 = 829 . a) Determine the mean life of the CPU. (Round your answer to the nearest integer.) b) Determine the variance of the life of the CPU. (Round your answer to the nearest integer.) c) What is the probability that the CPU fails before 500 hours?

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