SOLUTION: An urn B1 contains 2 white and 3 black balls and another urn B2 contains 3 white and 4 black balls. One urn is selected at random and a ball is drawn from it. If the ball drawn is

SOLUTION: An urn B1 contains 2 white and 3 black balls and another urn B2 contains 3 white and 4 black balls. One urn is selected at random and a ball is drawn from it. If the ball drawn is

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Question 1100449: An urn B1 contains 2 white and 3 black balls and another urn B2 contains 3 white and 4 black balls. One urn is selected at random and a ball is drawn from it. If the ball drawn is found black, find the probability that the urn chosen was B1.
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

P((urn B1) AND (black)) =

P((urn B2) AND (black)) =

Then the probability that urn B1 was chosen, given that the ball is black, is
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