lilkid5979 lilkid5979

20-05-2023
Mathematics

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Suppose that the average life of a refrigerator before replacement is m = 14 years with a (99. 7% of data) range from 8 to 20 years. Let x = age at which a refrigerator is replaced. Assume that x has a distribution that is approximately normal. Find a good approximation for the standard deviation of x values

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