You own a stock portfolio invested 15 percent in Stock Q, 15 percent in Stock R, 5 percent in Stock S, and 65 percent in Stock T. The betas for these four stocks are 0.43, 0.95, 1.02, and 1.12,...

You own a stock portfolio invested 15 percent in Stock Q, 15 percent in Stock R, 5 percent in Stock S, and 65 percent in Stock T. The betas for these four stocks are 0.43, 0.95, 1.02, and 1.12, respectively. What is the portfolio beta?