An urn contains 5 red balls 3 blue balls and 2 white balls, Ask an Expert

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An urn contains 5 red balls, 3 blue balls, and 2 white balls. Three balls are drawn from the urn at random without replacement. Let R be the number of red balls; B, the number of blue balls; and W, the number of white balls.

a) What is f_B|W=w? Is this a familiar distribution?

b) What is f_R|W=w? Is this a familiar distribution?

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