Project #20442 - statistics/proportions

Problem 4.2: Every year the CDC conducts phone surveys to assess the health risks of people in the U.S. This survey is abbreviated BRFSS, which stands for Behavioral Risk Factor Surveillance System. Review the following data collected for 2009:

Total number of respondents

Number of respondents who smoke everyday

Number of respondents who smoke some days

Number of respondents who are former smokers

Number of respondents who have never smoked

426,000

54,815

21,581

110,060

143,619

  1. Calculate the proportion of each group of respondents.
  2. Calculate the confidence interval for the proportion of respondents who stated they are former smokers.

Subject Mathematics
Due By (Pacific Time) 12/30/2013 07:00 pm
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