Mathematics, 19.07.2019 20:20, mbonham481

Apollster wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are getting better. a gallup poll taken in july 2010 estimates this proportion to be 0.33. using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.052 ?

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Apollster wants to construct a 95% confidence interval for the proportion of adults who believe that...