作者ozjucka (JACK)
看板Grad-ProbAsk
標題[問題] 98東華企研統計
時間Thu Apr 30 01:48:54 2009
今年出了25題統計選擇
有一題機率問題自己無法解出
題目是If a bag contains three white, two black, and four red balls
and four balls are drawn at random with replacement,
what is the probabilities that the sample contains just one white ball
given that it contains just one red ball ?
(1)36/125 (2)36/110 (3)27/125 (4)3/4
我自己好像猜3的樣子
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1F：推 wotenjean:這題考試耗超久的....找不出答案....>_< 04/30 11:58