Stock A has the following probability distributions of expected future returns. The Expected Rate of Return for Stock A = 9.5%; calculate the Standard Deviation and Coefficient of Variation for Stock A. Probability ri (%) -10 0.1 0.3 -5 0.4 15 0.2 30 12.81%; 1.35 11.75%; 1.24 9.53%; 1.01 14.04%; 1.48 13.24%; 1.39