The Pew Forum on Religion and Public Life reported on Dec. 9, 2009, that in a survey

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The Pew Forum on Religion and Public Life reported on Dec. 9, 2009, that in a survey of 2003 American adults, 25%

said they believed in astrology.

a. Calculate and interpret a confidence interval at the 99%

confidence level for the proportion of all adult Americans who believe in astrology.

b. What sample size would be required for the width of a 99% CI to be at most .05 irrespective of the value of ?

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Probability And Statistics For Engineering And The Sciences

ISBN: 9781133169345

8th Edition

Authors: Jay L Devore, Roger Ellsbury

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The Pew Forum on Religion and Public Life reported on Dec. 9, 2009, that in a survey

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Probability And Statistics For Engineering And The Sciences

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