Mathematics, 25.06.2019 21:30 mikey200059
Fewer young people are driving. in 1983, 87% of 19-year-olds had a driver’s license. twenty-five years later that percentage had dropped to 75% (university of michigan transportation research institute website, april 7, 2012). suppose these results are based on a random sample of 1200 19-year-olds in 1983 and again in 2008. a. at 95% confidence, what is the margin of error and the interval estimate of the number of 19-year-old drivers in 1983? b. at 95% confidence, what is the margin of error and the interval estimate of the number of 19-year-old drivers in 2008? c. is the margin of error the same in parts (a) and (b)? why or why not?
Answers: 1
Mathematics, 22.06.2019 01:00, justaguy15
In a newspaper, it was reported that yearly robberies in springfield were up 25% to 265 in 2013 from 2012. how many robberies were there in springfield in 2012?
Answers: 2
Mathematics, 22.06.2019 02:00, roseyy7245
The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots.
Answers: 1
Fewer young people are driving. in 1983, 87% of 19-year-olds had a driver’s license. twenty-five yea...
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