Question
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.
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 |
1,660 | 1,250 | 1,070 |
760 | 1,440 | 2,140 |
860 | 1,330 | 1,800 |
1,940 | 1,870 | 1,220 |
1,210 | 990 | 1,960 |
Click here for the Excel Data File
Fill in the missing data. (Round your p-value to 4 decimal places, mean values to 1 decimal place, and other answers to 2 decimal places.)
Group | Mean | n | Std. Dev | Variance |
Goliath | ||||
Varmint | ||||
Weasel | ||||
Total | ||||
One-Factor ANOVA | |||||
Source | SS | df | MS | F | p-value |
Treatment | |||||
Error | |||||
Total | |||||
Based on the given hypotheses, choose the right option. H0: 1 = 2 = 3 H1: Not all the means are equal = .05
multiple choice 2
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Reject the null hypothesis if p-value < 0.05
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Reject the null hypothesis if p-value > 0.05
On the basis of the above findings, we cannot reject the null hypothesis.
multiple choice 4
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False
-
True
Based on the given hypotheses, choose the right option. H0: 21 = 22 = 23 H1: Not all the variances are equal = .0
multiple choice 6
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Reject the null hypothesis if H < 15.5
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Reject the null hypothesis if H > 15.5
Calculate the value of Hcalc. (Round your answer to 2 decimal places.) Hcalc On the basis of the above-determined Hcalc, we reject the null hypothesis.
multiple choice 8
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False
-
True
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