10. Your investment has a 5% chance of earning -45% rate of return, a 25% chance of earning a 10% rate of return, a 25% chance of earning a 15% rate of return, a 25% chance of earning a 20% rate of return, and a 20% chance of earning 100%. What is the standard deviation of this investment? | 12. An investor invests 65% of her wealth in a risky asset with an expected rate of return of 9.53% and a variance of 3.72%, and she puts 30% in a Treasury bill that pays 2.47%. Her complete portfolio's expected rate of return and standard deviation are and respectively