Question 3 {Mandatory} [? pointsl According to Investment Digest ("Diversification and the RiskfReward Relationship", Winter 1994. 1-3], the mean of the annual return for common stocks from 1926 to 1992 was 16.5%, and the standard deviation of the annual return was 19%. a. What is the probability that the stock returns are greater than 0%? b. What is the probability:r that the stock returns are less than 18%? What is the area between the mean and our actual score? 0 0.403 in part a, 0.039 in part b O 0.403 in part a, 0.319 in part b O 0.303 in part a, 0.032 in part b O 0.303 in part a, 0.039 in part b