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(1 point) A box contains 4 red and 5 green marbles. If 6 marbles are drawn without replacement, what is the expected number of red
(1 point) A box contains 4 red and 5 green marbles. If 6 marbles are drawn without replacement, what is the expected number of red marbles? (Hint: find the probability distribution first, paying attention to the part "without replacement".)
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