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5. Suppose that each of two bags contains four pebbles, numbered 1 through 4. A pebble is drawn from the first bag and X denotes
5. Suppose that each of two bags contains four pebbles, numbered 1 through 4. A pebble is drawn from the first bag and X denotes its number. That pebble is then added to the second bag. A pebble is then drawn from the second bag. Let Y denote the number of that pebble. (a) Find px,y(x, y). (b) Show that px (k) = py (k) = 1, k = 1, 2, 3, 4. (c) Show that X and Y are not independent
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