Consider Supplemental Exercise 10-69. (a) Construct a 95% confidence interval on the ratio of the variances 1/
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(a) Construct a 95% confidence interval on the ratio of the variances σ1/ σ2, of failure stress under the two different test conditions.
(b) Use your answer in part (b) to determine whether there is a significant difference in variances of the two different test conditions. Explain your answer.
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Related Book For 
Applied Statistics In Business And Economics
ISBN: 9780073521480
4th Edition
Authors: David Doane, Lori Seward
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