Question

Help with probability tree diagram?

Answer 1

I've attached a photo of the problem

Answer 2

This is really hard for me to understand, can someone please explain? Thanks!

Answer 3

P(A) * P(D|A) = xr

Answer 4

whatever the values x and r are

Answer 5

Would b be yt?

Answer 6

yea

Answer 7

Would d be P(A|D) = P(A and D)?

Answer 8

I got 0.3.. I don't think I did it right

Answer 9

no, P(A|D) = P(A and D) / P(D)

Answer 10

For P(A and D) I got 0.18 / P(D) [0.6] = 0.3 but I feel like I did something incorrect

Answer 11

P(A and D) would be P(A) * P(D) right?

Answer 12

P(A|D) = P(A and D) / P(D)

Answer 13

Yeah, I think I'm having trouble calculating P(A and D) though

Answer 14

I multiplied x and r and then divided by r

Answer 15

P(A and D) = P(A) * P(D|A) = xr

Answer 16

P(D) = P(A) * P(D|A) + P(B) * P(D|B) = xr + yt

P(A|D) = xr / (xr + yt)

Answer 17

Thanks! I think I understand now.