4. We have two urns. The first urn contains 2 black balls and 3 white balls, and the second urn contains 1 black ball an

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4 We Have Two Urns The First Urn Contains 2 Black Balls And 3 White Balls And The Second Urn Contains 1 Black Ball An 1 (90.36 KiB) Viewed 49 times

4. We have two urns. The first urn contains 2 black balls and 3 white balls, and the second urn contains 1 black ball and 1 white ball. An urn is drawn at random, and a ball is chosen at random from it. What is the probability that the first urn is chosen, given the fact that a black ball is drawn? (Note: You will need to compute the probability of drawing a black ball by using cases.)