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Two cards are drawn one after another with replacement from a well-shuffled standard deck of 52 cards. Find the mean (expected number) of aces drawn.
- 1/13
- 3/13
- 2/13
- None of these
Correct answer: 2/13
Solution
Drawing with replacement gives Binomial(2, 1/13); the mean equals n*p = 2/13.
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