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March 30, 2015

Homework Help: statistics

Posted by Bob on Tuesday, October 11, 2011 at 2:28pm.

A sample of 12 measurements has a mean of 20 and a standard deviation of 2. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 20 each.

Find the standard deviation of the sample of 14 measurements.

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