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2) Your cousin Drippy wants to know the percent of Americans who can correctly identify the Washington, DC as the capital. Assume that he

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2) Your cousin Drippy wants to know the percent of Americans who can correctly identify the Washington, DC as the capital. Assume that he wants to be 95% confident that the sample percentage is within two percentage points of the true population percentage. a. Calculate the need sample size if a previous study suggests that 95% of Americans can identify the capital correctly. b. Calculate the need sample size if no estimate of the percentage of Americans that can identify the capital correctly is available.

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