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April 19, 2015

Homework Help: statistics

Posted by jon on Sunday, March 17, 2013 at 9:12pm.

The mean of nonresidential buildings is 30 years and the standard deviation of the ages of the buildings is 5 years. Determine the probability that a random sample of a group of 50 nonresidential buildings will have a mean age of less than 27.5 years.

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