Here are the answers to the problems I assigned in class last Wednesday. 1) 12.1% 6) min variance mean = 15.83, std dev. = 19.94 7) Tangency mean = 19.37, std. dev. = 24.57 8) reward-to-variability = 0.4221 9) std. dev. = 14.21 14) The line connecting two portfolios whose returns are perfectly correlated (worst case) would be a simple straight line.