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TABLE 4-1
Mothers Against Drunk Driving Is a Very Visible

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TABLE 4-1
Mothers Against Drunk Driving 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  Did alcohol play a role? 123 Totals  Yes 5010020170 No 2517530230 Totals 7527550400\begin{array}{l}\text { Number of Vehicles Involved }\\\begin{array} { l c c c c } \text { Did alcohol play a role? } & 1 & 2 & 3 & \text { Totals } \\\hline \text { Yes } & 50 & 100 & 20 & 170 \\\hline \text { No } & 25 & 175 & 30 & 230 \\\text { Totals } & 75 & 275 & 50 & 400 \\\hline\end{array}\end{array}
-Referring to Table 4-1, what proportion of accidents involved more than one vehicle?


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