In: Finance
Use the information in the table
| 
 State  | 
 Probabilty  | 
 Ret(US)  | 
 Ret(UK)  | 
 Ret(Brazil)  | 
| 
 1  | 
 .30  | 
 .10  | 
 .14  | 
 .06  | 
| 
 2  | 
 .30  | 
 .08  | 
 .07  | 
 .20  | 
| 
 3  | 
 .40  | 
 .14  | 
 .11  | 
 .06  | 
a. Expected Return from US= 0.3*10%+0.3*8%+0.4*14%=11%
Expected return from UK=0.3*14%+0.3*7%+0.4*11%=10.7%
Hence, expected return of a portfolio with 25% wealth invested in the US and 75% invested in the UK=25%*11%+75%*10.7%=10.775%
b.


Hence, standard deviation of the portfolio is 3.02%
c.


Hence, covariance is 0.000433
d.


We can see that standard deviation for US and UK is 3.06% and 3.51% but the standard deviation of their portfolio is 3.02% which is less than the individual 2 security.
Hence, diversification or less risk can be obtained by investing in both the US and UK.