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The American Heart Association is about to conduct an anti-smoking campaign and wants to know the...

The American Heart Association is about to conduct an anti-smoking campaign and wants to know the fraction of Americans over 24 who smoke. In an earlier study, the population proportion was estimated to be 0.3

How large a sample would be required in order to estimate the fraction of Americans over 24 who smoke at the 90% confidence level with an error of at most 0.3? Round your answer up to the next integer.

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