18) If 25% of a portfolio is invested in stock X, 55% in stock , and the balance in stock Z, what is the expected return? State of Economy Boom Normal Recession Probability of State of Econo Rate of Return if State Occurs Stock X 19% Stock Y Stock Z 6% 13% 25% 0 45% 50% 0 0 -23% 590 A) 2.38 percent B) -1.06 percent C) 2.99 percent D) 6.10 percent E) 5.93 percent 19) You have assembled a portfolio that includes three stocks, 45% of the portfolio is invested in Stock Z. Stock X makes up 40% of the portfolio and stock Y is only 15%. The three stocks betas have a wide range - Z-42; X-1.16; Y-1.47. Given that information what is your portfolio's beta? A) 1.13 B) 0.87 C) 1.09 D) 1.21 E) 1.18