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		.15			.40			.50			.30
Good		.60			.16			.10			.09
Poor		.20			.02			.05			.03
Bust		.05			.18			.25			.11

a.	Your portfolio is invested 25 percent each in A and C, and 50 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?