Problem 13-18 Reward-to-Risk Ratios [LO4] Stock Y has a beta of 1.4 and an expected return of 15.3 percent. Stock Z has a beta of 6 and an expected return of 8.3 percent. If the risk-free rate is 5.4 percent and the market risk premium is 6.4 percent, the reward-to-risk ratios for Stocks Y and Z are the SML reward-to-risk is percent, Stock Y is and percent, respectively. Since and Stock Z is (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)