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ZAA · 2018年11月28日

问一道题：NO.PZ2015120604000067 [ CFA I ]

  1. CFA I
  2. Quantitative

问题如下图：

选项：

A.

B.

C.

解释：

mutually exclusive不是independent吗
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菲菲_品职助教 · 2018年11月28日

同学你好，两个事件互斥并不是代表它们之间是独立的哦。而是互斥一定不独立。

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NO.PZ2015120604000067 问题如下 Whiof the following statements is the most correct? A.If events A anB are mutually exclusive, then P(A or B)=P(A)-P( B.If events A anB are mutually exclusive, then P(AB)=P(A)×P(B). C.If events A anB are mutually exclusive, then P(A or B)=P(A)+P( C is correct.P(AB)=P(A)×P(is only correwhen A anB are inpennt events. In this case, P(A/B)=0,P(AB)=0，because event A anB are mutually exclusive 为啥等于0 就等于PA+PB?

2022-11-30 05:54 1 · 回答

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2022-11-29 09:04 1 · 回答

NO.PZ2015120604000067 问题如下 Whiof the following statements is the most correct? A.If events A anB are mutually exclusive, then P(A or B)=P(A)-P( B.If events A anB are mutually exclusive, then P(AB)=P(A)×P(B). C.If events A anB are mutually exclusive, then P(A or B)=P(A)+P( C is correct.P(AB)=P(A)×P(is only correwhen A anB are inpennt events. In this case, P(A/B)=0,P(AB)=0，because event A anB are mutually exclusive 如上，谢谢

2022-10-01 11:21 1 · 回答

NO.PZ2015120604000067 解析中说到In this case, P(A/B)=0, because event A anB are mutually exclusive. P(A/B)为什么不是等于P(A)+P(B)?

2021-07-20 18:30 2 · 回答

老师，我知道P（a|b）和P（ab）都得零，但是C咱们随便假设一下，如果说P（a）=0.3 P（b）=0.2 两个数一算最后也不得零啊 为什么选C呢？

2019-08-21 01:40 1 · 回答