A Gallup Survey conducted in January 2010 reported that 78% of regular air travelers approved of U.S
Question: A Gallup Survey conducted in January 2010 reported that 78% of regular air travelers approved of U.S. airports using full body scans on airline passengers. The sample size was 542.
a. Construct a 95% confidence interval estimate of the proportion of regular air travelers who approved of U.S. airports using full body scans on airline passengers. What is the margin of error? Round your answers to three decimal places.
b. Construct a 99% confidence interval estimate of the proportion of regular air travelers who approved of U.S. airports using full body scans on airline passengers. What is the margin of error? Round your answers to three decimal places.
c. Which confidence interval is wider? Explain why?
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Deliverables: Word Document
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