Question: 4. Assume that random variables X and Y take three different values 1, 0, -1 according to the joint probability matrix 3 P = 3

4. Assume that random variables X and Y take three different values 1, 0, -1 according to the joint probability matrix 3 P = 3 NNN 18 3 2 compute the means mx, my, and the covariance matrix def cov (X, X) cov (X, Y) COV cov (Y, X) cov (Y, Y)

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