In a bumper test, three types of autos weredeliberately crashed into a barrier a

Question

In a bumper test, three types of autos weredeliberately crashed into a barrier at 5 mph, and the resultingdamage (in dollars) was estimated. Five test vehicles of each typewere crashed, with the results shownbelow. Researchquestion: Are the meancrash damages the same for these threevehicles?

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

Explanation / Answer

Means are Goliath: (1600+760+880+1950+1220)/5=6410/5=1282 Varmint (1290+1400+1390+1850+950)/5=6880/5=1376 Weasel (1090+2100+1830+1250+1920)/5=8190/5=1638 Clearly they are not the same. Weasel recorded the largest meancrash damage, while Goliath the smallest.

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