﻿ The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. they would  # The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. they would like the estimate to have a maximum error of 0.1 gallons. a previous study found that for an average family the variance is 5.76 gallons and the mean is 17.9 gallons per day. if they are using a 99% level of confidence, how large of a sample is required to estimate the mean usage of water?   ### Other questions on the subject: Mathematics Mathematics, 20.06.2019 18:04, hendo617
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The water works commission needs to know the mean household usage of water by the residents of a sma...

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