document.write( "Question 1205406: If the joint probability distribution of X and Y is given by
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document.write( "f(x,y) = ((x+y))/(30 ) , for x = 0,1,2,3; y = 0,1,2\r
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document.write( "a. P (X ≤2, Y = 1)
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document.write( "b. P ( X > Y)
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document.write( "c. P (X > 2 , Y ≤ 1)
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document.write( "d. P ( X + Y) = 4
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