1. Math
  2. Statistics And Probability
  3. ebook fewer young people are driving in 1983 87 of...

Question: ebook fewer young people are driving in 1983 87 of...

Question details

eBook Fewer young people are driving. In 1983, 87% of 19-year-alds had a drivers license. Twenty-five years later that percentage had dropped to 75% (University of Michigan Transportation Research Institute website, April 7, 2012). Suppase these results are based ana random sample of 1200 19-year-olds in 1983 and again in 2008. . At 95% confidence, what is the margin of emor and the interval estimate of the number of 19-year-old drivers in 1983? Round your intermediate answers to four decimal places Margin of errer- Interval estimate (to four decimal places) b. At 95% confidence, what is the margin of error and the interval estimate of the number of 19-year-old drivers in 2006? Round your answers to four decimal places Margin of error Interval estimate- . Is the margin af error the same in parts (a) and b)? (four decimal places) Select your answer- Why, or why not? The input in the box below will not be graded, but may ba reviewed and considered by your instructor. w will not

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution