Mathematics, 28.06.2019 20:10, Orlandon220

The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. assume that the population standard deviation is 2.5 gallons. the mean water usage per family was found to be 16 gallons per day for a sample of 762 families. construct the 85% confidence interval for the mean usage of water. round your answers to one decimal place

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