Question 2 You have observed the following returns over time: Year 2015 2016 2017 2018 2019 STOCK X 14% 19 - 16 3 20 STOCK Y 13% 7 -5 1 11 Market 12% 10 -12 1 15 Assume that the risk-free rate is 6 percent and the market risk premium is 5 percent a. What are the betas of Stocks X and Y? b. What are the required rates of return for Stocks X and Y? c. What is the required rate of return for a portfolio consisting of 80 percent of stock X and 20 percent of Stock Y? d. If Stock X's expected return is 22 percent, is Stock X under-or overvalued