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April 24, 2014

Homework Help: statistics

Posted by Devika on Monday, July 16, 2012 at 12:27pm.

A random sample of size 81 is taken from a large population, measuring the time it takes to complete a driver’s license examination. The sample mean was found to be 43 minutes, and the sample standard deviation 5.71 minutes. Construct a 95% confidence interval around the sample mean.

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