Problem 4 Suppose X and Y have the following joint probabilities: p(1, 1) = 0.30 p(1,2) = 0.20 p(2, 1) = 0.10 p(2,2) =0.40 Find: a) E[X] and E[Y] b) Var(X) and Var(Y)

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Problem 4
Suppose X and Y have the following joint probabilities:
p(1,1) = 0.30 p(1, 2) = 0.20
p(2, 1) — 0.10 р(2, 2) — 0.40
Find:
a) E[X] and E[Y]
b) Var(X) and Var(Y)
Transcribed Image Text:Problem 4 Suppose X and Y have the following joint probabilities: p(1,1) = 0.30 p(1, 2) = 0.20 p(2, 1) — 0.10 р(2, 2) — 0.40 Find: a) E[X] and E[Y] b) Var(X) and Var(Y)
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