In a comparison of gasoline with different octane ratings, 24 vans are driven with 87 octane gasoline,

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In a comparison of gasoline with different octane ratings, 24 vans are driven with 87 octane gasoline, while 28 sport utility vehicles are driven with 91 octane gasoline. After being driven for 250 miles, the amount of gasoline consumed is measured for each vehicle.
Identify any problems that are likely to cause confounding and explain how the problems could be avoided. Discuss any other problems that might affect the results.
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Related Book For  book-img-for-question

Statistical Reasoning for Everyday Life

ISBN: 978-0321817624

4th edition

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

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