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September 17, 2014

Homework Help: statistics

Posted by jp on Wednesday, June 13, 2012 at 12:46pm.

In order to test a new production method, 36 employees were selected randomly to try the new method. The mean was 75.79 parts per hour with a standard deviation of 28.25 parts per hour.

Calculate a 95% confidence interval for the true mean production rate for the new method.

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