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categoryإحصاء schoolبكالوريوس event_available2026-07-15

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PDF Problem 2 (Joint PDF and Covariance): (10 points) Random variables X and Y have joint (x+y)/3 0≤x≤1;0≤ y ≤2 fx,y(x,y) = = { 0 otherwise. (a) What are E[X] and VAR[X]? (b) What are E[Y] and VAR[Y]? (c) What is COV[X,Y]? (d) What is E[X+Y]? (e) What is VAR[X+Y]?

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