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Unformatted text preview: c. Are X and Y independent in each of the three cases? 3. (3 pts) (Textbook exercise 4.10) The random vector variable ( X, Y ) has the joint pdf f X,Y ( x, y ) = k ( x + y ) < x < 1 , < y < 1 a. Find k . b. Find the joint cdf of ( X, Y ). c. Find the marginal pdf of X and of Y . d. Are X and Y independent? 4. (2 pts) Find the joint CDF F X,Y ( x, y ) when X and Y have the joint pdf f X,Y ( x, y ) = ( 2 y x 1 otherxise 1...
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 Fall '08
 GELFAND

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