If the joint probability distribution of X and Y is given by * x+y f(x,y) : ,for x = 0,1,2,3; y = 0,1,2. Find P(X + Y = 4) 30 f (x, y) 1 2 3 1 2 3 30 1 30 3 2 30 4 Y 1 30 3 4 2 30 30 30 30 3/5 7/30 4/15 none of the choices

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Q: 3 If P(X + Y > 5) = then a and b are equal to:

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Q: Simplify each of the following expression. (8!7!) 5!4! 7. 12! 3!2! 10 8. 4!3! 45! 0. 43!5!

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