Compute Conditional Probabilities
-A Study Was Recently Done That Emphasized $\frac { 119 } { 319 }$

Multiple Choice

Compute Conditional Probabilities
-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. Given that an accident involved multiple vehicles, what what is the probability that it involved alcohol?

A) $\frac { 119 } { 319 }$
B) $\frac { 119 } { 400 }$
C) $\frac { 21 } { 46 }$
D) $\frac { 21 } { 400 }$