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.
3.09%/(3.09%+6.58%+6.16%) 我怎么算出来0.88
3.09%/0.035=0.88
