Suppose that each of two urns has four chips, numbered 1 through 4. A chip is drawn

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Suppose that each of two urns has four chips, numbered 1 through 4. A chip is drawn from the first urn and bears the number X. That chip is added to the second urn. A chip is then drawn from the second urn. Call its number Y.
(a) Find pX,Y (x, y).
(b) Show that pX (k) = pY (k) = 1/4, k =1, 2, 3, 4.
(c) Show that X and Y are not independent.
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