If the manager of a bottled water distributor wants to estimate, with 95% confidence, the mean amount

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If the manager of a bottled water distributor wants to estimate, with 95% confidence, the mean amount of water in a 1 gallon bottle to within ± 0.004 gallon and also assumes that the standard deviation is 0.02 gallon, what sample size is needed?
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Business Statistics A First Course

ISBN: 9780321979018

7th Edition

Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan

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