一道关于新GRE market survey showed that 76 percent of the visitor

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一道关于新GRE market survey showed that 76 percent of the visitors at a certain resor
A market survey showed that 76 percent of the visitors at a certain resort came from Pacific or southwestern states.Of these,were from California,and 87 percent of the Californians were from southern of the Californians were from southern California.Approximately what percent of the visitors at the resort were from southern California?
(A)40% (B)45% (C)50% (D)55% (E)65%'
新G里面是不是要考正态分布图啊?那个看不懂诶.还有概率什么的好难啊
Of these,68%were from California,

Of these,were from California
好像缺了个百分数
再问： 68%
再答：来自加利福尼亚的占76%*68%=51.68% 其中位于南加州的51.68%*87%=44.96% 选B

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