please solve all parts

Consider the following information about three stocks: Rate of Return If State Occurs Stock B State of Economy Boom Normal Bust Probability of State of Economy .25 .50 .25 Stock A .35 .17 Stock C .52 .40 15 13 .01 -32 -40 a-1. If your portfolio is invested 35 percent each in A and B and 30 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 3.70 percent, what is the expected riskypremium 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 3.30 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.) % % % a-1. Portfolio expected return a-2. Variance a-3. Standard deviation b. Expected risk premium C-1. Approximate expected real return Exact expected real return C-2. Approximate expected real risk premium Exact expected real risk premium % % % %