I know the answers are already there, I just need help with working out the equations to get those answers.

ittps://mylogin.laus Raz Rale or Retum I State occurS State of Economy Boom Normal Bust Probability of State of EconomyStock A .28 .22 20 45 35 Stock B 40 20 20 Stock C 56 18 48 a-1 If your portfolio is invested 30 percent each in A and B and 40 percent in C, what is the portfolio expected return? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Portfolio expected return 8.65% a 2 What is the variance? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g., 32.16161.) ariance 06902 o a-3 What is the standard deviation? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Standard deviation 26,27% b. If the expected T-bill rate is 4 20 percent what is the expected risk premium on the portfolio? (Do not 2 decimal places, round intermediate calculations. Enter your answer as a percent rounded to e.g., 32.16.) Expected risk premium 4.45 000 c-1 if the expected inflation rate is 3.80 percent, what are the approximate and exact expected real returns on the portfolio? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Approximate expected real return Exact expected real return 4,85 % 4.67 0 % c-2 What are the approximate and exact expected real risk premiums on the portfolio? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g 32.16.) Approximate expected real risk premium 4.45 0 %