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E) Ailt anu1 uependent or i ndependent? Why or why ow? Assu not? 4.1-3. Let the joint pmf of X and Y be defined by independ of the fo f(x,y) = x+y 321,2, y-1,2,3,4 S equal position (a) Find fr (x), the marginal pmf of X. (b) Find frO), the marginal pmf of Y (c) Find P(X> Y). (d) Find P(Y-2X). (e) Find P(X + Y = 3). (f) Find P(X 33-Y). (g) Are X and Y independent or dependent? Why or why (a) Defi two- joint (b) Wh 4·1-8· 1 of 12 a to date boys a prefer prefer (a) D in not? (h) Find the means and the variances of X and Y. 4.1-4. Select an (even) integer randomly from the set 10, 2, 4, 6, 8}·Then select an integer randomly from the set (0, 1. 2, 3. 4. Let X equal the integer that is selected
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