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Mathematics, 11.12.2019 02:31 ineedhelp2285
Fewer young people are driving. in 1983, 87% of 19-year-olds had a driver’s license. twenty-five years later (in 2008) that percentage had dropped to 75%. suppose these results are based on a random sample of 1200 19-year-olds in 1983 and again in 2008. at a 95% confidence, what is the margin of error and the interval estimate of the number of 19-year-old drivers in 1983? at a 95% confidence, what is the margin of error and the interval estimate of the number of 19-year-old drivers in 2008? is the margin of error the same in parts (a) and (b)? why or why not?
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