Question: The sample of eight companies in the aerospace industry referred

The sample of eight companies in the aerospace industry, referred to in Exercise 38, was surveyed as to their return on investment last year. The results are 10.6, 12.6, 14.8, 18.2, 12.0, 14.8, 12.2, and 15.6.
a. Compute the sample variance.
b. Determine the sample standard deviation.


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  • CreatedDecember 10, 2014
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