开发者:上海品职教育科技有限公司 隐私政策详情

应用版本:4.2.11(IOS)|3.2.5(安卓)APP下载

daihannah · 2018年08月29日

问一道题:NO.PZ2015120604000073 [ CFA I ]

问题如下图:

    

选项:

A.

B.

C.

解释:

B的解释不应该是股票市场表现poor的情况下,明天可能会好的概率吗?不应该是0.2/0.4吗?


1 个答案

菲菲_品职助教 · 2018年08月29日

同学你好,你这边对于表格的理解可能有一点偏差。表格中最后一列最下面的框框里第二天市场业绩表现好的概率是0.2就已经是基于今天市场表现不好的条件下的概率了,也就是B选项描述的情况。

酣然大笑 · 2018年11月03日

老师,那这道题其实不用计算,直接选答案就可以了吗?

菲菲_品职助教 · 2018年11月05日

是的没错。

  • 1

    回答
  • 0

    关注
  • 324

    浏览
相关问题

NO.PZ2015120604000073 问题如下 Accorng to the above table, whiof the following statements is the most correct? A.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.01. B.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.20. C.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.50. B is correct.P(gooperformanof next y/poor performanof toy)=0.2, whiis shown in the table. 04*0.2除以(0.4*0.2+0.4*0.5+0.4*0.3)

2023-02-07 07:24 2 · 回答

NO.PZ2015120604000073 问题如下 Accorng to the above table, whiof the following statements is the most correct? A.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.01. B.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.20. C.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.50. B is correct.P(gooperformanof next y/poor performanof toy)=0.2, whiis shown in the table. 这道题不是说在一个事件发生的前提下,这个事件发生吗?不应该用P(B|A)=P(AB)/P(A)这个公式吗?就是0.2/0.4

2023-02-05 23:06 1 · 回答

NO.PZ2015120604000073 问题如下 Accorng to the above table, whiof the following statements is the most correct? A.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.01. B.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.20. C.If performanof toy's bonmarket is poor, the contionprobability of having gooperformanof next y's bonmarket is equto 0.50. B is correct.P(gooperformanof next y/poor performanof toy)=0.2, whiis shown in the table. (1)请问老师,这段题目如何判断出表达的是条件概率,而不是二叉树(需要相乘)~(2)如果题目答案为相乘形式,即第一天市场poor的概率乘以第二天市场goo概率,请问题干一般如何表达?谢谢老师。

2022-11-12 10:13 1 · 回答

老师可以写一下具体计算过程吗?

2020-11-10 17:47 1 · 回答

不应该是0.4*0.2吗?

2019-09-03 00:26 1 · 回答