Question: A pollster wants to construct a99%confidence interval for the proportion of adults who believe that economic conditions are getting better. A poll taken in July2010

A pollster wants to construct a99%confidence interval for the proportion of adults who believe that economic conditions are getting better.

A poll taken in July2010 estimates this proportion to be0.35. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of0.02? Fill in the blank below.

A sample of(blank) adults is needed to obtain a99% confidence interval with a margin of error of0.02.

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