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Mathematics, 06.04.2021 03:20 cecilf57p2rpuf

Each year the US Environmental Protection Agency (EPA) releases fuel economy data on cars manufactured in that year. Below are summary statistics on fuel eciency (in miles/gallon) from random samples of cars with manual and automatic transmissions. Do these data provide strong evidence of a di erence between the average fuel efficiency of cars with manual and automatic transmissions in terms of their average city mileage? City MPG
Automatic Manual
Mean 16.12 19.85
SD 3.58 4.51
n 26 26

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