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March 27, 2017

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In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles?
Crash Damage ($)
Goliath Varmint Weasel
1,600 1,290 1,090
760 1,400 2,100
880 1,390 1,830
1,950 1,850 1,250
1,220 950 0000

  • statistics - ,

    Take a shot, what do you think?
    This is an easy question, just calculate the means of for each of the three vehicles.

  • statistics - ,

    In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles? Crash1
    Crash Damage ($)
    Goliath Varmint Weasel
    1,600 1,290 1,090
    760 1,400 2,100
    880 1,390 1,830
    1,950 1,850 1,250
    1,220 950 1,920

  • statistics - ,

    Since the p-value > 0.05 we fail to reject H0 and conclude that the means are the same.

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