试题与答案

如果沪深300指数以0.62的概率上升,以0.38的概率下跌;在同一时间间隔内香港恒

题型:单项选择题

题目:

如果沪深300指数以0.62的概率上升,以0.38的概率下跌;在同一时间间隔内香港恒生指数能以0.65的概率上升,以0.35的概率下跌;再假定两个指数同时上升的概率为0.4。问沪深300指数或香港恒生指数上升的概率是()。

A.0.17

B.1.27

C.0.37

D.0.87

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D

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