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problemset12

# problemset12 - STAT/MA 416 Problem Set 12 Instructions for...

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STAT/MA 416 September 19, 2011 Problem Set 12 Instructions for this assignment: Solve any 5 of the problems #1 through #8 that you choose, and also solve problem #9 . You can get some extra credit by solving the others too. Show all steps for all of your solutions. Circling the correct solution is insufficient. Name: 1. Suppose that four urns each contain two balls. Urns 1 and 2 each have one black ball and one white ball. Urn 3 has two black balls. Urn 4 has two white balls. An urn is selected at random. Given that the first ball drawn from this urn is black, what is the probability that the other ball in this urn is also black? A.) 1 / 8 B.) 1 / 6 C.) 1 / 4 D.) 1 / 3 E.) 1 / 2 1

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2. A box has 10 balls, 6 of which are black and 4 of which are white. Three balls are removed from the box, their color unnoted. Find the probability that a fourth ball removed from the box is white. 2

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problemset12 - STAT/MA 416 Problem Set 12 Instructions for...

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