Let X and Y be jointly normal random variables with parameters a. Find P(2X + Y

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Let X and Y be jointly normal random variables with parametersx = 1, o=1, y = 0, o = 4, and p py =

a. Find P(2X + Y ≤ 3).

b. Find Cov(X + Y, 2X −Y).

c. Find P(Y > 1|X = 2).

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