Portfolio Returns and Volatilities Given the following information, calculate the expected return and standard deviation for a portfolio that has 40 percent invested in Stock A, 30 percent in Stock B, and the balance in Stock C.

State of

Probability of

Economy

State of

Returns

Boom

Economy

Stock A

Stock B

Stock C

Bust

0.4

15%

18%

20%

0.6

5

0

5