Each year the US Environmental Protection Agency (EPA) releases fuel economy data on cars manufactured in that
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Each year the US Environmental Protection Agency (EPA) releases fuel economy data on cars manufactured in that year. Below are summary statistics on fuel efficiency (in miles/gallon) from random samples of cars with manual and automatic transmissions. Do these data provide strong evidence of a difference between the average fuel efficiency of cars with manual and automatic transmissions in terms of their average city mileage? Assume that conditions for inference are satisfied.
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Let Group 1 Automatic Group 2 Manual H 0 1 2 0 Ha 1 2 0 Two Tai...View the full answer
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Related Book For 
OpenIntro Statistics
ISBN: 9781943450077
4th Edition
Authors: David Diez, Mine Çetinkaya-Rundel, Christopher Barr
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