Question 134515
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
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Ho: means are all the same
Ha: at least one of the means is different
Chi-Sq Test:
Test Statistic: Chi-Sq = 1338.97
p-value: 0
df= 8
Conclusion: Reject Ho
At least one of the means is different
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Cheers,
Stan H.