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Mathematics, 05.05.2020 23:25 dejah791
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 2.4 gallons. The mean water usage per family was found to be 15.8 gallons per day for a sample of 4331 families. Construct the 99% confidence interval for the mean usage of water. Round your answers to one decimal place.
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