If the economy recovers next year, analysts expect Stock X's return for the year to be 20%; if the economy does not recover, analysts expect Stock X's return for the year to be -5%. If there is a 40% chance that the economy will recover and a 60% that it will not, what is:
a. The expected return on Stock X for the next year?
b. The standard deviation of the return on Stock X for the next year?