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  3. (a) a poll taken in july 2010 estimates this propo

(a) A poll taken in July 2010 estimates this proportion to be 0.32. Using this...

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(a) A poll taken in July 2010 estimates this proportion to be 0.32. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.02?A sample of __ adults is needed to obtain an 80% confidence interval with a margin of error of 0.02.

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