Historical Returns: Expected and Required Rates of Return You have observed the following returns over time: Year 2017 Stock X 14% 2018 19 2019 -12 2 18 11% 1777 2020 2021 Stock Y Market 11% 5 9 -6 -11 3 3 10 12 Assume that the risk-free rate is 4% and the market risk premium is 2%. a. What are the betas of Stocks X and Y? Do not round intermediate calculations. Round your answers to two decimal places. Stock X: Stock Y: b. What are the required rates of return on Stocks X and Y? Do not round intermediate calculations. Round your answers to two decimal places. Stock X: Stock Y: % % c. What is the required rate of return on a portfolio consisting of 80% of Stock X and 20% of Stock Y? Do not round intermediate calculations. Round your answer to two decimal places. %