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

Multiple Choice

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:
$$\begin{array}{l}\text { Number of Vehicles Involved }\\\begin{array} { l c l l l c } \hline \text { Did alcohol playa role? } & 1 & 2 & 3 & \text { Totals } \\\hline \text { Yes } & 50 & 100 & 20 & 170 \\\hline \text { No } & 25 & 175 & 30 & 230 \\\text { Totals } & 75 & 275 & 50 & 400 \\\hline\end{array}\end{array}$$
-Referring to Table 4-1, given that alcohol was not involved, what proportion of the accidents were single vehicle?

A) 25/75 or 33.33%
B) 50/170 or 29.41%
C) 50/75 or 66.67%
D) 25/230 or 10.87%