Question

picture of problem is attached..

Answer 1

@ybarrap

Answer 2

hello? how do I find this?

Answer 3

Start with the 1 problem
What is the P(gold|Gold Deluxe)? Look at the tree. If its a Gold Deluxe Box, then what are the chances that if you selected an egg from this box, it would be gold?

Answer 4

umm..

Answer 5

Focus only on one branch, the Gold Deluxe Branch, and look at the only two types of eggs that can be in that box. How many gold are in that box?

Answer 6

3/4

Answer 7

correct, now you can do that for each of the "end" branches, this will give, for example, P(gold|Reg) = 1/2 and P(plain|Eco)=3/4, etc. Do you see how I got these?

Answer 8

wait so howd u get P(Gold|Regular)?

Answer 9

by focusing only on the Regular branch and calculating what the chance of told is, 2 gold and 2 plain are the only possibilities for this box. So what is P(gold|Reg)?

Answer 10

(gold* not told)

Answer 11

2/4 or 1/2 as well

Answer 12

why did u just delete that?

Answer 13

yea that's what im thinking too..

Answer 14

21/260??

Answer 15

someone else told me its 1/2...

Answer 16

not to be rude or anything, BUT I AM SO SICK OF THIS, BECAUSE I REALLY NEED TO MOVE ON CUZ IVE SPENT AN HR. OR LONGER ON THIS PROBLEM...... :(

Answer 17

so it si 1/2 right???

Answer 18

*is

Answer 19

1/20 is what I got

Answer 20

.......

Answer 21

but the calculations above.. 3+2+1/ ... equals 1/2

Answer 22

@surjithayer told me its 1/2??

Answer 23

just need to do the calculations -- I see 1/5

Answer 24

Is 1/5 one of the options?

Answer 25

Where's the next prob?

Answer 26

the next problem??

Answer 27

1/5 is not an option! neither is 1/20!

Answer 28

ok. like surjit said, 1/2 is an option as u can see in the pic above..

Answer 29

@genius12

Answer 30

The options have to be wrong. I get for P(gold) = 9/20
But P(Reg|gold) = P(gold|Reg)P(Reg)/P(gold) = (1/2)(1/5) / (9/20) = 2/9
That's the only possibility I see.

Answer 31

I didn't see your other options. Looks like 2/9 is the answer. I tried using 2 different techniques.

Answer 32

P(gold) = P(gold|Reg)P(Reg)+P(gold|Gold)P(Gold)+P(gold|Eco)P(Eco) = 9/20

Answer 33

I'm positive now.

Answer 34

for what problem???

Answer 35

for the one posted above???

Answer 36

PicnicTech

Answer 37

yes

Answer 38

yea the one above right??

Answer 39

It's not 1/2

Answer 40

D: D: I already submitted 1/2 for that!! I told u, I had to move on, because I was spending to much time on this one! :( :(

Answer 41

so it was 9/20?? :( wow.. I feel horrible. can u @least help me get the right ans for a different question? I just need a 2nd opinion on it cuz I've been discussing it w/ @ loser or a while..

Answer 42

absolutely

Answer 43

ok..

Answer 44

I tagged u im pretty sure