help needed with the following questions

4 Consider the following information: Probability of State of State of Rate of Return if State Occurs Economy Economy Stock A Stock B Stock C Boom 0. 55 0. 06 0. 14 0. 34 5/10 Bust 0 . 45 0. 10 0 . 02 -0.07 points awarded Scored a. What is the expected return on an equally weighted portfolio of these three stocks? (Do not round intermediate calculations. Round the final answer to 2 decimal places.) Expected return 10.65 b. What is the variance of a portfolio invested 25% each in A and B and 50% in C? (Do not round intermediate calculations. Round the final answer to 6 decimal places.) Variance 63.516118You've observed the following nominal returns on Regina Computer's stock over the past five years: 10%, -10%, 17%, 22%, and 10%. suppose the average inflation rate over this period was 1.5% and the average T-bill rate over the period was 3.0%. a. What was the average real return on Regina's stock? (Do not round intermediate 5/10 calculations Round the final answer to 2 decimal places.) points awarded Average real return 3.32 x % Scored b. What was the average nominal risk premium on Regina's stock? (Do not round intermediate calculations Round the final answer to 2 decimal places.) Average nominal risk premium 6.80