Question: Given the following probability distribution, what is the expected return and the standard deviation of returns for security?
state 1, probability 0.2, expected return 10%
state 1, probability 0.6, expected return 15%
state 3, probability 0.2, expected return 20%
a. 15%; 6.50%
b. 12%; 5.18%
c. 15%; 3.16%
d. 15%; 10.00%
e. 20%; 5.00%