please help me with these questions

Question 7 13 pts Bay Land, Inc. has expected return of 15% and standard deviation of 7.75%. What is the probability that Bay Land, Inc. will return less than 7.25%? 16% 34% 66% 84% Previous Next Question 8 13 pts A portfolio with a Sharpe ratio of 0.85 generated a return of 23% last year when T-bills were paying 6%. The standard deviation of the excess return of this portfolio was 46% 20% 60% 33%