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 .34 .44 .35
Good .55 .18 .15 .09
Poor .25 –.02 –.05 –.04
Bust .05 –.12 –.30 –.07

a. Your portfolio is invested 30 percent each in A and C, and 40 percent in B. What is the expected return of the portfolio? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)
b-1. What is the variance of this portfolio? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g., .32161.)
b-2. What is the standard deviation? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)