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The four sides of a picture frame consist of two pieces selected from a population whose mean length is 30 cm with standard deviation 0.1 cm, and two pieces selected from a population whose mean length is 45 cm with

The four sides of a picture frame consist of two pieces selected from a population whose mean length is 30 cm with standard deviation 0.1 cm, and two pieces selected from a population whose mean length is 45 cm with standard deviation 0.3 cm.
a. Find the mean perimeter.
b. Assuming the four pieces are chosen independently, find the standard deviation of the perimeter.

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Statistics For Engineers And Scientists

Statistics For Engineers And Scientists

ISBN: 9780073376332

3rd Edition

Authors: William Navidi

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Posted Date: May 17, 2016 07:38:36
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