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April 18, 2015

Homework Help: statistics

Posted by Anonymous on Monday, April 11, 2011 at 10:33pm.

At a local manufacturing plant, employees must complete new machine set ups within 30 minutes. New machine set-up times can be described by a normal model with a mean of 22 minutes and a standard deviation of four minutes.

a. What percent of new machine set ups take more than 30 minutes?

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