Question

Use the data in the following table, which summarizes results from 179 pedestrian deaths that were caused by accidents. If two different deaths are randomly selected without replacement, find the probability that they both involved intoxicated driver.
Pedestrian Intoxicated
Yes No
Driver Yes 96 40
Intoxicated No 31 12
I am not sure what I am doing wrong now.
Please help me!!

Answer 1

@jim_thompson5910 . something is going on. I keep doing it wrong.. Please help me. :)

Answer 2

this is the same one from yesterday?

Answer 3

oh but it's using different numbers

Answer 4

P(2 intoxicated drivers) = (136/179)*(135/178)

Answer 5

This is because there are a total of 96+40 = 136 intoxicated drivers out of 179 total

Answer 6

I did it that way..

Answer 7

and it said wrong answer?

Answer 8

And the quiz answer was 0.5762 and I got 0.5772.

Answer 9

(136/179)*(135/178) = 0.5762350134957

Answer 10

It might my calculator?

Answer 11

which rounds to 0.5762

Answer 12

not sure how you got 0.5772

Answer 13

You have 178 for the total of all of them?

Answer 14

well it says that there are 179 of them total

Answer 15

it drops to 178 after you pick the first driver

Answer 16

since it says "without replacement"

Answer 17

Ohh because it says two different deaths? OMG!!! that is what I messed up.. Lol!!

Answer 18

Yes, I was trying to do it like that, but i didn't subst the two to have it 178..

Answer 19

i gotcha

Answer 20

Thanks again!! I really appreciate all your help..

Answer 21

np