The table summarizes results from 983 pedestrian deaths that were caused by automobile accidents.

Question

The table summarizes results from 983 pedestrian deaths that were caused by automobile accidents.

Driver Intoxicated Pedestrian Intoxicated

Yes Yes No

50 70

No 234 629

If one of the pedestrian deaths is randomly selected, find the probability that neither the pedestrian nor the driver was intoxicated. Please enter a decimal to 4 places.

Answer 1

Divide the relevant number by the total number. In this case, the relevant number they're asking for is "neither pedestrian nor driver."

Neither/Total = 629/983 = .6398779247...

Rounded to four figures that is .6399

This, of course, assumes that the posted table is formatted correctly and is accurately legible. Seems a tad crooked.