Question

picture posted

Answer 1

is it 1/3?

Answer 2

Not exactly. It's a little more than that, and close to 1/2.
Please show how you got your answer.

Answer 3

Im not really sure how to do this. can u help me

Answer 4

its not 1/4 right?

Answer 5

@mathmate

Answer 6

The diagram you showed is a probability tree.
The numbers 3,2, 5 on the left means that the probability of choosing the golden deluxe is 3/(3+2+5)=0.3
For the second step, the probability of getting a gold is 3/(3+1)=3/4
So the probability of getting gold with golden deluxe is (3/10)*(3/4)=9/40
Repeat for the other boxes and add up the probabilities.

Answer 7

so this is what I got: along w/ ur 9/40:

9/40 + 3/20 + 3/40 ???? is that right?

Answer 8

@Loser66

Answer 9

I got 9/20 as a final answer??

Answer 10

kk.

Answer 11

♫ im above to lose my mental stability :(

Answer 12

how 1/4?

Answer 13

that's what I said FIRST but @mathmate told me that's incorrect but very close to 1/2. & 9/20 is close to 1/2...

Answer 14

yea I know right? but then I was doubtful after mathmate told me that..

Answer 15

"all them go"?

Answer 16

wow.. thanks a lot

Answer 17

IM SERIOUSLY GONNA BE CRAZY IF I DONT GET THIS RIGHT ANSWER

Answer 18

I need a 2nd opinion :(

Answer 19

@ybarrap

Answer 20

@vinnv226 help pls?

Answer 21

I believe it's 1/4. You know you're getting an Econolunch. The Econolunch has 1 gold and 3 plain. So it has 4 eggs in total. So the probability of getting a gold egg is 1 in 4.

Answer 22

ok..

Answer 23

@ybarrap what do u think

Answer 24

I get 1/4
P(gold|Eco) = 1/4

Answer 25

woow. ok ill submit that then

Answer 26

This is easy because you don't really need to do any calculations, just go to the end of the branch for Eco and then see what is the probability of gold, it's just 1/4.

Answer 27

THAT WAS MY 1ST GUESS!!! BUT THEN mathmate said it wasn't so I ha to wai like AN HOUR!!!

Answer 28

:(

Answer 29

You've been at this for days, take a breather.

Answer 30

another problem attached...

Answer 31

I know...

Answer 32

you have 1 in 3 chance of getting a King, because there are only 3 cards and one of them is a King. The 1st draw adds no information about the 2nd draw because you put the card back into the deck

Answer 33

are u sure it's just 1/3??

Answer 34

yeah, it's just 3 cards and you choose one randomly from it.

Answer 35

ok

Answer 36

this is the easiest problem you've had, way easy

Answer 37

ok

Answer 38

Sorry I was out for a while.
9/40 is correct for the first problem.

Answer 39

Sorry, I reread the question after barrap's post. It is P(gold|econolunch)=1/4. My bad.

Answer 40

For the card problem, we need to draw exactly one king out of two draws.
This can happen in two ways:
KX or XK.
To get KX, we have a probability of (1/3)(2/3)=2/9.
To get XK, we have a probability of (2/3)(1/3)=2/9.
So probability of getting exactly one king is the sum of the two, namely 4/9.

Answer 41

@mathmate is correct, I assumed that only the last draw counted