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April 19, 2015

Homework Help: statistics

Posted by Anonymous on Saturday, December 8, 2012 at 8:21pm.

Ramdom sample of 41 car owners results in a mean of 7 years. Population standard deviation of 3.75 years. Find a 95% confidence interval for the true population mean..My answer is
(5.9, 8.1) but having problems with margin of error

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