Question: Let X, Y be two random numbers with joint distribution function f (x, y) = K x for y x y + 1,


Let X, Y be two random numbers with joint distribution function 

f (x, y)  = K x       for y ≤ x ≤ y + 1, 0 ≤ y ≤ 2, 


=    0         otherwise. 

(a) Compute K. 

(b) Compute the m.d.f. and the expectation of X.

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