The water works commission needs to know the mean household usage of water by the residents of a small town in gallons p
Posted: Mon May 09, 2022 12:23 pm
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 0.15
gallons. A previous study found that for an average family the
variance is 3.61 gallons and the mean is 19.4 gallons per day. If
they are using a 95% level of confidence, how large of a sample is
required to estimate the mean usage of water? Round your answer up
to the next integer.
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 0.15
gallons. A previous study found that for an average family the
variance is 3.61 gallons and the mean is 19.4 gallons per day. If
they are using a 95% level of confidence, how large of a sample is
required to estimate the mean usage of water? Round your answer up
to the next integer.