Historical Returns: Expected and Required Rates of Return You have observed the following returns over time: Year Stock X Stock Y 2014 14% 14% Market 14% 2015 17 8 8 2016 -17 -6 -11 2017 2018 3 19 2 11 2 12 Assume that the risk-free rate is 6% and the market risk premium is 4%. 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. %