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Below are the stock returns for the past five years for Agnew industries What was the stock's coefficient of variation during this 5-year period? (Use the population standard deviation to calculate the coefficient of variation) 10.80 146 1572 069 422 Stock X. Stock Y. and the market have had the following returns over the past four years The risk-free rate is 7 percent. The market risk premium is 5 percent. What is the required rate of return for a portfolio that consists of $14,000 invested in Stock X and $6,000 invested in Stock Y? 9 94% 1068% 1158% 1241% 13.67%