Stock Y has a beta of 1.20 and an expected return of 15.00 percent. Stock Z has a beta of .70 and an expected return of 10 percent. If the risk-free rate is 5.0 percent and the market risk premium is 8.0 percent, what are the reward-to-risk ratios of Y and Z?

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True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.