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10. l Questions Navigation Menu iollect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of .31. Check My Work The Centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a a. How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02 (to the nearest whole number)? Use 95% confidence. :1 b. Assume that the study uses your sample size recommendation in part (a) and finds 520 smokers. What is the point estimate of the proportion of smokers in the population (to 4 decimals)? :1 c. What is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)? (SIS) Check My Work 0! Icon Key Exercise 08.57 (Algorithmic) 1 Question 10 of 10 SubmitAssignmentfo Grading