- Question 8 1 point Number Help A stock had returns of 12 percent, 30 percent, and -9 percent over the past 3 years. What is the mean of the stock's returns over the past 3 years minus the sample standard deviation of the stock's returns from the past 3 years? Answer as a rate in decimal format so that 12.34% would be entered as . 1234 and 0.98% would be entered as .0098. Number - Question 9 1 point Number Help What is the expected standard deviation of stock A's returns based on the information presented in the table? Answer as a rate in decimal format so that 12.34% would be entered as 1234 and 0.98% would be entered as .0098. Note that figures in the table are presented in decimal format, not as percentages. Outcome L Probability of outcome Stock A return in outcome Good 10.3 0.8 Medium 0.5 0.1 Bad -0.4 Number