The water works commission needs to know the mean househoid usage of water by the residents of a small town in galons per day They would e the estimate to have a maximum error of 0.12 gailons Aprevious study found that for an average family the variance is 5.29 gallons and the mean is 17 galons per day tthey are using a 8S% level of confidence, how large of a sample is required to estimate the mean usage of waterRound your answer up to the next integer Answer Tables Kypad How to enter your answer Keyboard Shortcuts

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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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 lke the estimate to
have a maximum error of 0.12 gallons. Aprevious study found that for an average family the variance is 5.29 gallons and the mean is 17 galons per day. if they are
using a 85 % 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
m Tables
Keypad
Answer
How to enter your answer
Keyboard Shortcuts
Transcribed Image Text: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 lke the estimate to have a maximum error of 0.12 gallons. Aprevious study found that for an average family the variance is 5.29 gallons and the mean is 17 galons per day. if they are using a 85 % 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 m Tables Keypad Answer How to enter your answer Keyboard Shortcuts
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