OpenStudy (karleighangelica):
The Journal of the American Medical Association (April 1993) reported on the results of a National Health Interview Survey designed to determine the prevalence of smoking among US adults. Of the 43,732 survey respondents, 11,239 indicated that they were current smokers and 10,539 indicated that they were former smokers. Construct a 90% confidence interval for the percentage of US adults who currently (circa 1993) smoke cigarettes. Construct a 95% confidence interval for the percentage of US adults who former (circa 1993) cigarette smokers. Use the five-step process that we use in class
OpenStudy (agent0smith):
http://f.tqn.com/y/statistics/1/W/g/1/-/-/proportion.png First find the proportion for current smokers: how many currently smoke, divided by the total.
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