Answer:
You didn´t post the complete information of the exercise, I searched the exercise online and tried to ask the most useful question.
Step-by-step explanation:
There is a direct relationship between the risk of Juanita's portfolio and it's average annual return.
Note: Risk and return are directly proportional to each other.
Juanita currently earns a return of 4.5% that is currently she holds portfolio B and she wishes to earn a return of 9.5% that is portfolio D. Then
Sell some of her bonds and use proceeds to buy stocks
Accept more risk.
Suppose, Juanita modifies her portfolio to contain 75% diversified stock and 25% government risk free bond, that is she choose combination D. The average annual return of this type of portfolio is 9.5% but the standard deviation is 15%, the returns will typically (about 95% of the time) vary from a gain of 39.5% to a loss of - 20.5%.
95% confidence = 2 × SD = 2 × 15 = 30
Gain = 9.5 + 30 = 39.5
Loss = 9.5 - 30 = - 20.5