If you want to be 95% confident of estimating the population proportion to within a sampling error

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If you want to be 95% confident of estimating the population proportion to within a sampling error of ± 0.02 and there is historical evidence that the population proportion is approximately 0.40, 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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Question Posted: Jul 16, 2015 07:30 PM

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If you want to be 95% confident of estimating the population proportion to within a sampling error

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