=d. Ann was a statistics major in college and so understands well that the expected return and risk in this model represent estimates of the mean and standard deviation of the probability distribution of the profit from the corresponding portfolio. Ann uses the notation and for the mean and standard deviation. She recalls that, for typical probability distributions, the probability is fairly high (about 0.8 or 0.9) that the return will exceed , and the probability is extremely high (often close to 0.999) that the profit will exceed 3 . Calculate and 3 for the four portfolios obtained in part

c. Which portfolio will give Ann the highest among those that also give 0?