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

yy1177 · 2020年03月19日

问一道题:NO.PZ2016082406000011

问题如下:

A portfolio of bonds consists of five bonds whose default correlation is zero. The one-year probabilities of default of the bonds are: 1%, 2%, 5%, 10%, and 15%. What is the one-year probability of no default within the portfolio?

选项:

A.

71%

B.

67%

C.

85%

D.

99%

解释:

ANSWER: A

Because the events are independent, the joint probability is given by the product (1p1)(1p2)(1p3)(1p4)(1p5)=(11%)(12%)(1  5%)(1  10%)(120%)=70.51%.{(1-p_1)}{(1-p_2)}{(1-p_3)}{(1-p_4)}{(1-p_5)}={(1-1\%)}{(1-2\%)}{(1\text{ }-\text{ }5\%)}{(1\text{ }-\text{ }10\%)}{(1-20\%)}=70.51\%.

老师你好,这道题的答案解析有误

应该是

(1−1%)(1−2%)(1 − 5%)(1 − 10%)(1−15%)=70.51%.


吧?

谢谢

1 个答案

品职答疑小助手雍 · 2020年03月20日

嗯嗯,谢谢指正,我跟后台反馈下~