Question
Fewer young people are driving. In1995, 63.9%of people under20years old who were eligible had a driver's license. Bloomberg reported that percentage had dropped to41.7%in2016. Suppose
Fewer young people are driving. In1995, 63.9%of people under20years old who were eligible had a driver's license. Bloomberg reported that percentage had dropped to41.7%in2016. Suppose these results are based on a random sample of1,200people under20years old who were eligible to have a driver's license in1995and again in 2016.
a.At95% confidence, what is the margin of error and the interval estimate of the number of eligible people under20years old who had a driver's license in 1995?
Margin of error=______(to four decimal places)
Interval estimate= ____ to _____(to four decimal places)
b.At95%confidence, what is the margin of error and the interval estimate of the number of eligible people under20years old who had a driver's license in2016?
Margin of error= ____(to four decimal places)
Interval estimate= ____to____(to four decimal places)
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