Question

Please help with this, I won't give up!!

*Use the data in the following table, which summarizes results from 171 pedestrian deaths that were caused by accidents. If two different deaths are randomly select the replacement, find the probability they both involved intoxicated drivers.
Pedestrian Intoxicated?
Yes No
Drivers yes 25 34
Intoxicated? No 97 15

Please help me, Thanks!!! ;))

Answer 1

how many drivers were intoxicated?

Answer 2

122?

Answer 3

look in the first row

Answer 4

that's where the drivers were intoxicated

Answer 5

add up those numbers to get 25+34 = 59

Answer 6

so there were 59 intoxicated drivers total

Answer 7

Oh!

Answer 8

So what is the probability of selecting one random intoxicated driver?

Answer 9

That's my problem. How do I select the Random?

Answer 10

Add them all?

Answer 11

it will be then 59/171?

Answer 12

you are correct, the probability of selecting an intoxicated driver is 59/171

Answer 13

Ooh good! :)

Answer 14

so if you're selecting with replacement, then

P(2 intoxicated drivers) = (59/171)*(59/171)


if you're selecting without replacement, then

P(2 intoxicated drivers) = (59/171)*(58/170)

Answer 15

Ohh waoo!! It will be without replacement..Then the answer is 0.1177%
Which is correct. OMG!!

Answer 16

you got it, very nice

Answer 17

Thank you so muchh!!!! Now I am ready for my quiz! jeje!

Answer 18

you're welcome

Answer 19

good luck

Answer 20

Thanx!! =D

Answer 21

np