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Picture Attached The time to failure [in hours) of fans in a personal computer can be modeled by an exponential distribution with A = 0-0004

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The time to failure [in hours) of fans in a personal computer can be modeled by an exponential distribution with A = 0-0004 . Round your answers to 4 decimal places. (a) What proportion of fans will last at least 8000 hours? (b) What proportion of fans will last at most 7000 hours? (a) E (b) E

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