Stock Y has a beta of 1.0 and an expected return of 13.5 percent. Stock Z has a beta of 0.6 and an expected return of 9.0 percent. If the risk-free rate is 5.8 percent and the market risk premium is 6.8 percent, the reward-to-risk ratios for stocks Y and Z are ? and ? percent, respectively. the SML reward-to-risk is ? percent