What is the standard deviation of a portfolio that is invested 69 percent in Stock A and 31 percent in Stock B given the following information:

What is the standard deviation of a portfolio that is invested 69 percent in Stock A and 31 percent in Stock B given the following information:

State of Economy
Probability of State of Economy
Stock A Returns
Stock B Returns
Boom
0.24
35%
-4%
Normal
0.76
16.50
36