问题
选择题
| 把200本书平均分给四个班，每班分得这些书的（ ） |
答案
每班分得这些书的：1÷4=
．1 4
故选：A．
搜题请搜索小程序“爱下问搜题”
| 把200本书平均分给四个班，每班分得这些书的（ ） |
每班分得这些书的：1÷4=
．1 4
故选：A．
ABC has an expected return of 18% and a standard deviation of 20%. XYZ has an expected return of 32% and a standard deviation of 40%. What is the variance of a portfolio that invests 25% in ABC and the remainder in XYZ, if the correlation between the two securities is 70%
A．
| A. 33.7%. |
B．
| B. 30.0%. |
C．
| C. 11.4%. |