Q#3: Let X and Y have the joint p.d.f described as follows (x, y) f(x,y) (1.1) 2 15 (1.2) 4 15 (1.3) 3 15 (2.1) 1 15 e) Find the first four raw moments. f) Find first four moments about mean. 8) Find the correlation coefficient between X and Y. Interpret the result. (2.2) 1 15

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