Suppose the average family of 4 washes 2000 lbs of laundry

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Suppose the average family of 4 washes 2000 lbs of laundry each year. Assume the variable is normally distributed with a standard deviation of 187.5 lbs. Suppose a sample of 50 families is taken. Find two values so that there is a 99.9% chance that the mean of this sample falls between them.

Reference no: EM13615011

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