不明白，这个答案怎么出来的呢

NO.PZ2020010304000013

问题如下：

Suppose that the annual profit of two firms, one an incumbent (Big Firm, X1) and the other a startup (Small Firm, X2), can be described with the following probability matrix:

What is the conditional distribution of Small Firm’s profits if Big Firm has a $100M profit year?

选项：

解释：

The conditional distribution is just the row corresponding to USD 100M normalized to sum to 1. The conditional is different from the marginal, which is another demonstration that the profits are not independent.

不明白，这个答案怎么出来的呢

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wuzx · 2021年07月20日

为什么要把各项占比同比例增大？

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袁园_品职助教 · 2021年03月24日

这是求的条件分布，所以应该在Big firm X1 = 100M的条件下，再去算它的概率。所以应该把X1=100时，X2取各值的概率，同比例增大，使得新的四个概率之和为100% 。拿19.5%举例：3.09%/(3.09%+6.58%+6.16%)=19.5%

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NO.PZ2020010304000013 问题如下 Suppose ththe annuprofit of two firms, one incumbent (Big Firm, X1) anthe other a startup (Small Firm, X2), cscribewith the following probability matrix:Whis the contionstribution of Small Firm’s profits if Big Firm ha $100M profit year? The contionstribution is just the row corresponng to US100M normalizeto sum to 1. The contionis fferent from the marginal, whiis another monstration ththe profits are not inpennt. 或者这题用哪个知识点呀，看了一圈其他答案的解答还是有些懵

2024-03-16 20:42 2 · 回答

NO.PZ2020010304000013 问题如下 Suppose ththe annuprofit of two firms, one incumbent (Big Firm, X1) anthe other a startup (Small Firm, X2), cscribewith the following probability matrix:Whis the contionstribution of Small Firm’s profits if Big Firm ha $100M profit year? The contionstribution is just the row corresponng to US100M normalizeto sum to 1. The contionis fferent from the marginal, whiis another monstration ththe profits are not inpennt. 3.09%/(3.09%+6.58%+6.16%) 我怎么算出来0.883.09%/0.035=0.88

2024-03-10 22:40 1 · 回答

NO.PZ2020010304000013 答案说看最后一行占100%多少。这个怎么看？

2022-01-25 19:18 3 · 回答

当大公司profit是100M的时候，小公司的收益的各种情况的概率。不就是表格中的0% 及那几个概率吗？没看懂题目的意思，从什么角度分析

2020-12-12 09:16 1 · 回答

不明白，这个答案怎么出来的呢

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