If common stocks have an expected return of 18% with a standard deviation of 9% and expected returns are normally distributed, the probability of experiencing a negative return is closest to

a) 34.25%

b) 50%

c) 0.5%

d) 2.28%

e) 4.56%

Which is the right answer and please explain?

PM. If common stocks have an expected return of 18% with a standard deviation of 9% and expected returns are normally distributed, the probability of experiencing a negative return is closest to O a. 34.25% O b. 50% O c. 0.5% O d. 2.28% O e. 4.56%