Assume there are three potential outcomes in the market, high, normal, and low. The probabilities of these three outcomes are 0.30, 0.40, and 0.30, respectively. In the three outcomes stock X has returns of 48%, 22%, and -24%, respectively; stock Y has returns of 24%, 12%, and -5%, respectively. a. Compute the expected return for stock Y b. Compute the standard deviation for stock X.