Hello,
hope this is correct..
Okay, last one!
You have a jar with 5Red balls & 2Green balls--a ball's chosen randomly. It's returned to the jar along w/6 more of the same color. Then, a ball is drawn again--calculate the probability that the second ball is Red, as a fraction in lowest terms, showing all intermediate steps.
Also, find the prob. that both balls drawn are same color--don't need to simplify this answer.
THANK YOU SO MUCH!!
Hello, bjanela!
You're right, Robb!
I'll baby-step through it . . .
There are two cases to consider:You have a jar with 5 Red balls and 2 Green balls.
A ball is chosen randomly.
It's returned to the jar along w/6 more of the same color.
Then, a ball is drawn again.
(a) Find the probability that the second ball is Red.
. . [1] The first ball is Red.
. . [2] The first ball is Green.
Case 1: the first ball is red.
. .
Then the jar has: .11 Red, 2 Green
. .
Hence: .=
Case 2: the first ball is green.
. .
Then the jar has: .5 Red, 8 Green
. .
Hence: .
Therefore: .
(b) Find the probabiity that both balls drawn are same color.
We already know: .
We have: .
. . The jar has: .5 Red, 8 Green
. . Then: .
. . Hence: .
Therefore: .