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Mathematics, 22.08.2019 04:30 Angellbatton6763

Acertain brand of refrigerator has a useful life that is normally distributed with mean 10 years and standard deviation 3 years. the useful lives of these refrigerators are independent. calculate the probability that the total useful life of two randomly selected refrigerators will exceed 1.9 times the useful life of a third randomly selected refrigerator.

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