Historical Returns: Expected and Required Rates of Return You have observed the following returns over time: Year Stock X Stock Y Market 2014 16% 11% 13% 2015 21 8 12 2016 -14 -6 -10 2017 2018 4 24 2 11 3 15 2- S Assume that the risk-free rate is 5% 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. %