If one of the pedestrian deaths is randomly selected, find the probability that both the pedestrian and the driver were intoxicated. Please enter a decimal to 4 places.

Question

The table summarizes results from 975 pedestrian deaths that were caused by automobile accidents.

Pedestrian DeathsDriver	Intoxicated?Pedestrian Intoxicated?
Yes	No
Yes	47	79
No	284	565

If one of the pedestrian deaths is randomly selected, find the probability that both the pedestrian and the driver were intoxicated. Please enter a decimal to 4 places.

Probability = 

Answer 1

Pr(drunk Pedestrian) + Pr(drunk driver) - Pr(both drunk)

47/331 + 79/644 - (47/331)(79/644)

= about .1473