# Smoking in the US: Confidence Intervals

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Smoking in the United States: An August 2007 nationwide random survey of 1012 adults asked whether they had smoked cigarettes in the last week. Among the respondents, 243 said they had. We can act as if the sample were an SRS.

a. Give a 95% confidence interval for the proportion of all American adults who smoked in the week preceding the survey.

b. Write a short paragraph for a news report based on the survey results.

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##### Solution Summary

The solution discusses smoking in the United States and determines the confidence intervals.

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