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Posted by **Tiff** on Monday, October 4, 2010 at 9:38pm.

(1) What is the probability that both balls are red?

(2) What is the probability that both balls are red given that the first ball you drew was red?

- statistics -
**Reiny**, Monday, October 4, 2010 at 11:26pm1.

first draw is a red, now bag B contains

3R, 2W, and 2B

prob of both red = (1/2)(3/7) = 3/14

2.

prob that 2nd is read, given that the first is red = 3/7

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