討論串[理工] 機率
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假設機率公設總合改為3,其他兩個公設不變，. 那麼請問一試驗為擲n次硬幣，. 假設r.v.X為正面出現的次數，. 且為一公正的硬幣，. 那麼請問在新的機率公設下的p(X=x)為何?. 答案是p(X=x)=3(nCx)/2^n. 假設在正常的機率公設中p(Y=y)=nCy(1/2)^n. 那和上述比較
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Denote by A、B、C the events that a grand prize is behind doors A、B、C,. respectively.Suppose you randomly picked a door and say A. The game host. opened
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1.. A ordinary deck of 52 cards is dealt,13 each,at random. among A,B,C,and D.Waht is the probability that A and. B together get two aces?. 我一開始是算4C1*
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