Mothers Against Drunk Driving (MADD) is a very visible group whose main focus is

Question

Mothers Against Drunk Driving (MADD) is a very visible group whose main focus is to educate the public about the harm caused by drunk drivers. A study was recently done that emphasized the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below: Number of Vehicles Involved Referring to TABLE 1, what proportion of accidents involved more than one vehicle?

Explanation / Answer

Proportion of accidents involved more than one vehicle

= P(More than one vehicle)

= P(2 vehicles) + P(3 vehicles)

= 275/ 400 + 50/ 400

= 325/ 400

= 13/16

= 0.8125 or 81.25%

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