題組內容

5. Ten million dollars are invested in long-term business bonds by Percival Hygiene. The annual standard deviation of this bond portfolio is 10%, while the predicted annual rate of return is 9%. Percival's financial advisor, Amanda Reckonwith, suggests that Percival think about purchasing an index fund that closely resembles the Standard & Poor's 500 Index. The index has an expected return of 14%, and its standard deviation is 16%.

(b) (5%) Could Percival do even better by investing equal amounts in the corporate bond portfolio and the index fund? The correlation between the bond portfolio and the index fund is \( +0.1 \).