a. According to the APT, what is the risk premium on each of the three stocks? b. Suppose you buy $380 of X and $95 of Y and sell $285 of Z. What is the sensitivity of your portfolio to each of the two factors? What is the expected risk premium? c. Suppose you buy $152 of X and $114 of Y and sell $76 of Z. What is the sensitivity of your portfolio to each of the two factors? What is the expected risk premium? d. Finally, suppose you buy $304 of X and $38 of Y and sell $152 of Z. What is your portfolio's sensitivity now to each of the two factors? And what is the expected risk premium? According to the APT, what is the risk premium on each of the three stocks? (Enter your answers as a percent rounded to 2 decimal places.) Complete this question by entering your answers in the tabs below. Suppose you buy $380 of X and $95 of Y and sell $285 of Z. What is the sensitivity of your portfolio to each of the two factors? What is the expected risk premium? (Leave no cells blank, enter " 0 " wherever required. A negative answer should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places.) Suppose you buy $152 of X and $114 of Y and sell $76 of Z. What is the sensitivity of your portfolio to each of the two factors? What is the expected risk premium? (Leave no cells blank, enter " 0 " wherever required. Do not round intermediate calculations, Round your answers to 2 decimal places.) Complete this question by entering your answers in the tabs below. Finally, suppose you buy $304 of X and $38 of Y and sell $152 of Z. What is your portfolio's sensitivity now to each of the two factors? And what is the expected risk premium? (A negative answer should be indicated by a minus sign. Round your answers to 2 decimal places.)