SOLUTION: The table summarizes results from 985 pedestrian deaths that were caused by automobile accidents. Driver Intoxicated? Pedestrian Intoxicated? Yes No Yes 50 78 No 235 622

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Question 1174112: The table summarizes results from 985 pedestrian deaths that were caused by automobile accidents.
Driver
Intoxicated? Pedestrian Intoxicated?
Yes No
Yes 50 78
No 235 622

If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was not intoxicated or the driver was not intoxicated.
Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
----Yes No--Total
Yes 50 78---128
No 235 622-857
tot 285-700-985
I will assume driver is on the vertical and pedestrian on the horizontal.
The first part is 1-probability that both were intoxicated. That is the cell "50"
So the answer is 935/985 or 94.9%