A 2012 report by the Centers for Disease Control provided a point estimate of 18.1% for the
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A 2012 report by the Centers for Disease Control provided a point estimate of 18.1% for the percentage of adult Americans who currently smoke cigarettes. The sample size was 34,525. Assuming that this sample has the characteristics of a random sample, construct and interpret a 99% confidence interval for the population proportion of smokers. (Note: When n is very large, even confidence intervals with large confidence levels are narrow.)
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