题目内容:
某投资者预测投资收益率的概率分布表如下:
R |
15% |
10% |
8% |
6% |
P |
10% |
35% |
45% |
10% |
B.9.2%
C.9%
D.8%
参考答案:
答案解析:
R |
15% |
10% |
8% |
6% |
P |
10% |
35% |
45% |
10% |