Consider the following information:

		Rate of Return if State Occurs
State of	Probability of
Economy	State of Economy	Stock A	Stock B	Stock C
Boom	.30	.20	.36	.27
Good	.35	.17	.24	.09
Poor	.20	.01	.09	.04
Bust	.15	.09	.20	.10

Your portfolio is invested 30 percent each in A and C, and 40 percent in B. What is the expected return of the portfolio?

b-1.

What is the variance of this portfolio?

b-2.	What is the standard deviation?