In an urn there are two white, two black and one red ball. Apart from color, they are otherwise the same. Two balls are drawn without bouncing. The number of white (X) and the number of black (Y) spheres are recorded. question a) Calculate the simultaneous point probability of (X, Y). b) Calculate E (X), E (Y), Var (X) and Var (Y). c) Calculate Cov (X, Y) and ρ (X, Y).

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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In an urn there are two white, two black and one red ball. Apart from color, they are otherwise the same. Two balls are drawn without bouncing. The number of white (X) and the number of black (Y) spheres are recorded.

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a) Calculate the simultaneous point probability of (X, Y).
b) Calculate E (X), E (Y), Var (X) and Var (Y).
c) Calculate Cov (X, Y) and ρ (X, Y).

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