Question

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

Pedestrian Deaths

Driver Intoxicated?	Pedestrian Intoxicated?
	Yes	No
Yes	51	69
No	241	629

If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was intoxicated. (Round your answer to 4 decimal places.)

Answer 1

Solution:

Given:

Pedestrian Deaths
Driver	Pedestrian Intoxicated?
Intoxicated?	Yes	No	Totals
Yes	51	69	120
No	241	629	870
Totals	292	698	N = 990

one of the pedestrian deaths is randomly selected.

We have to find:

P( the pedestrian was intoxicated ) = ................?

P( the pedestrian was intoxicated ) = Total of pedestrian intoxicated ( Yes ) / N

P( the pedestrian was intoxicated ) = 292 / 990

P( the pedestrian was intoxicated ) = 0.294949

P( the pedestrian was intoxicated ) = 0.2949