1 Let X and Y be two random variables with the joint PDF fx y (x,y)=D 1 y where 0sxs5 and 0sys4 90 (a) The marginal distribution of X is (select the correct choice and fill in the box): O A. fx(x) =| for 0sxs5. O B. fx(x) = for 0sys4. a C a C a C (Insert a function like X+- or y + y as necessary.) or (b) The marginal distribution of Y is (select the correct choice and fill in the box):

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