Historical Returns: Expected and Required Rates of Return You have observed the following returns over time: Assume that the risk-free rate is 5 percentage and the market risk premium is 7 percentage Do not round intermediate calculations. a. What is the beta of Stock X? What is the beta of Stock Y? b. What is the required rate of return on Stock X? What is the required rate of return on Stock Y? c. What is the required rate of return on a portfolio consisting of 80 percentage of Stock X and 20 percentage of Stock Y? d. If Stock X's expected return is 20 percentage, is Stock X under- or overvalued II I. Stock X is overvalued, because its expected return exceeds its required rate of return II. Stock X is undervalued, because its expected return its exceeds required rate of return. III. Stock Y is undervalued, because its expected return exceeds its required rate of return IV. Stock X is undervalued, because its expected return is below its required rate of return