2. A portfolio has an expected rate of return of 0.15 and a standard deviation of 0.15. The risk-free rate is 6%. An investor has the following utility function: U = E(r)-(A/2) s2. Which value of A makes this investor indifferent between the risky portfolio and the risk-free asset? 0.06 0.15-A/2(0.15) 0.06 0.15-A/2(0.0225) -0.01125 A -0.09 A = 8 U=0.15-8/2(0.15) = 6%