please solve all parts

Consider the following information about three stocks: Rate of Return If State Occurs Stock A Stock C State of Economy Boom Normal Bust Probability of State of Economy .20 .45 .35 .20 .18 .02 Stock B .32 .16 -34 .54 .14 -42 a-1. If your portfolio is invested 40 percent each in A and B and 20 percent in C, what is the portfolio expected return? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) a-2. What is the variance? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g., .16161.) a-3. 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.) b. If the expected T-bill rate is 3.80 percent, what is the expected risk premium on the portfolio? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) C-1. If the expected inflation rate is 3.40 percent, what are the approximate and exact expected real returns on the portfolio? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) c-2. What are the approximate and exact expected real risk premiums on the portfolio? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Portfolio expected return 9.62 X % Variance 0.06530 X a- 1. a- 2. a- 3. b. Standard deviation 25.55 X % 6.02 X % C- 1. 6.42 X % Expected risk premium Approximate expected real return Exact expected real return Approximate expected real risk premium Exact expected real risk premium 6.22 % % C- 2. 3.22 % 3.02 %