The Centers for Disease Control reported the percentage of people 18 years of age and older who
Question:
a. How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02? Use 95% confidence.
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?
c. What is the 95% confidence interval for the proportion of smokers in the population?
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a Use n 2017 b p ...View the full answer
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Related Book For 
Statistics For Business & Economics
ISBN: 9781305585317
13th Edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
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