(Expected return and risk) The following data represent returns for the common stocks over a one-year period. Probability 0.1 0.2 0.2 0.3 0.2 Returns Google -20% 8% 15% -18% 4% ATT -10% 4% 9% 20% -6% The standard deviation of Google return is %. (Keep the sign and two decimal numbers.) Constant dividends) TTK Corp preferred stock pays a $2 annual dividend per share. Similar-risk preferred stock yields 15%. The stock price of TTK 4 years later is going to be $ (Constant growth model)Hilliard Inc. just paid a $2 annual dividend on its common stock. The dividend is expected to increase 2.6% per year indefinitely. If the required rate of return is 9.1%, the stock's value $