6. A small desert island is known to contain 10 green and 15 red lizards. Ten baited traps are placed on the island and researchers wait until all ten traps hold exactly one lizard. Compute the variance of the number of trapped lizards divided by the expectation. (a) 1/8 (Ъ) 3/16 (c) 1/4 (d) 5/16 (e) 3/8

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