11.6 Calculating returns and standard deviations: Based on the following information, calculate the expected return and standard deviation:

State of Economy	Probability state of economy	Rate of return if state occurs
Depression	0.15	-0.148
Recession	0.30	0.031
Normal	0.45	0.162
Boom	0.10	0.348

11.9 Returns and Stannard deviations Consider the following information:

		Rate of return if state occurs
State of Economy	Probability of state of Economy	Stock A	Stock B	Stock C
Boom	0.20	0.24	0.45	0.33
Good	0.35	0.09	0.10	0.15
Poor	0.40	0.03	-0.10	-0.05
Bust	0.05	-0.05	-0.25	-0.09

1. Your portfolio is invested 30 percent each in A and C and 40 percent in B. What is the expected return of the portfolio?
2. What is the variance of this portfolio? The standard deviation?