Consider an investor who has a risk aversion coefficient of 4 . Consider the indifference curve corresponding to a utility level of 0.07 for this investor. Consider a portfolio with a standard deviation of 18 percent that lies along this indifference curve. Please specify the expected return of that portfolio. Your answer should be a entered as a percentage rounded to one decimal place, e.g., enter 6.38% as 6.4 (no percentage sign)