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The tobacco industry closely monitors all surveys that involve smoking. One survey showed that among 7'85 randomfy selected subjects who completed four years of college,

The tobacco industry closely monitors all surveys that involve smoking. One survey showed that among 7'85 randomfy selected subjects who completed four years of college, 18.3% smoke (based on data from the American Medical Association). The 95% confidence interval for the true percentage of smokers among all people who completed 4 years of college. Round to 3 decimals

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