Consider a test of the claim that with a new device installed, the mean fuel consumption of

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Consider a test of the claim that with a new device installed, the mean fuel consumption of cars is reduced by 0.08 miles per gallon. The resulting P-value is 0.009. Is the mean fuel consumption reduction statistically significant? Does the mean fuel consumption reduction of 0.08 miles per gallon have practical significance? Why or why not?
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Statistical Reasoning for Everyday Life

ISBN: 978-0321817624

4th edition

Authors: Jeff Bennett, Bill Briggs, Mario F. Triola

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