# Math Help - Confidence Interval

1. ## Confidence Interval

In a random sample, 64 of 200 motorists stopped at a roadblock had not fastened their seatbelts. Construct a 95% confidence interval for the corresponding true proportion of motorists who do not fasten their seatbelt.

2. Originally Posted by GoDuke
In a random sample, 64 of 200 motorists stopped at a roadblock had not fastened their seatbelts. Construct a 95% confidence interval for the corresponding true proportion of motorists who do not fasten their seatbelt.
Reply #3 of this thread: http://www.mathhelpforum.com/math-he...-homework.html

gives an example you can follow.