In a bumper test, three test vehicles of each of three types of autos were crash
ID: 2927098 • Letter: I
Question
In a bumper test, three test vehicles of each of three types of autos were crashed into a barrier at 5 mph, and the resulting damage was estimated. Crashes were from three angles: head-on, slanted, and rear-end. The results are shown below. Research questions: Is the mean repair cost affected by crash type and/or vehicle type? Are the observed effects (if any) large enough to be of practical importance (as opposed to statistical significance)?
5 mph Collision Damage ($)
Fill in the missing data. (Round your table of means values to 1 decimal place, SS and F values to 2 decimal places, MS values to 3 decimal places, and p-values to 4 decimal places.)
Factor 2 (Vehicle)
Perform Tukey multiple comparison tests. (Input the mean values within the input boxes of the first row and input boxes of the first column. Round your t-values and critical values to 2 decimal places and other answers to 3 decimal places.)
Tukey simultaneous comparison t-values (d.f. = 18)
Tukey simultaneous comparison t-values (d.f. = 18)
In a bumper test, three test vehicles of each of three types of autos were crashed into a barrier at 5 mph, and the resulting damage was estimated. Crashes were from three angles: head-on, slanted, and rear-end. The results are shown below. Research questions: Is the mean repair cost affected by crash type and/or vehicle type? Are the observed effects (if any) large enough to be of practical importance (as opposed to statistical significance)?
Explanation / Answer
(a1) b
(a2)a
(a3)b
(b)
(c) The main effects of angle and vehicle are significant, but there is not a significant interaction effect.
(d)
angle N damage type Mean headon goliath 3 1010 headon varmint 3 1693.33 headon weasel 3 1870 rearend goliath 3 976.667 rearend varmint 3 1206.67 rearend weasel 3 1500 slant goliath 3 1460 slant varmint 3 1716.67 slant weasel 3 1996.67