NO.PZ2021062201000002
问题如下：
After six months, the growth portfolio that Rayan Khan manages has outperformed its benchmark. Khan states that his odds of beating the benchmark for the year are 3 to 1. If these odds are correct, what is the probability that Khan's portfolio will beat the benchmark for the year?
选项：
A.0.33
B.0.67
C.0.75
解释：
C is correct.
The odds for beating the benchmark = P(beating benchmark) / [1-P(beating benchmark)].
Let P(A) = P(beating benchmark). Odds for beating the benchmark =P(A) / [1-P(A)]
3/1=P(A) / [1-P(A)]
Solving for P(A), the probability of beating the benchmark is 0.75.
知识点：Probability Concepts
“his odds of beating the benchmark for the year are 3 to 1”里的odds of =odds for？
