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September 20, 2014

Homework Help: Statistics

Posted by John on Monday, November 5, 2012 at 9:53am.

A random sample of 250 men yielded 175 who said they'd ridden a motorcycle at some time in their lives, while a similar sample of 215 women yielded only 43 that had done so. Find a 99% confidence interval for the difference between the proportions of men and women who have ridden motorcycles.


.4688 .085

.5 .112

.5 .103

.5 .085

.5 .078

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