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(6-40) Historical Returns: Expected and Required Rates of Return You have observed the following returns over time: Year 2006 2007 2008 2009 2010 Stock X 14% 19 -16 3 20 Stock Y 7 -5 11 Market 10 -12 15 Assume that the risk-free rate is 6% and the market risk premium is 5%. a. b. c. d. 1%at are the betas of Stocks X and Y? V%at are the required rates of return on Stocks X and Y? 1%at is the required rate of return on a portfolio consisting of 80% of Stock X and 20% of Stock Y? If Stock X's expected return is 22%, is Stock X under- or overvalued?