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In the bumper test, three kinds of autos were deliberately crashed in a barrier at 5 mph, and resulting damage (in dollars) was estimated. Five test vehicles of each kind were crashed, with results shown below. Research problem: Are the mean crash damages the same for such three vehicles?

Crash damage $  
Goliath Varmint Weasel
1600 1290 1090
760 1400 2100
880 1390 1830
1950 1850 1250
1220 950 1920

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