1 [7] 1.1. Calculate the arithmetic and geometric mean return for a stock with four-year annual returns of -7%, 10%, 50%, 15%. (2) 1.2. Calculate the standard deviation of annual investment returns, given the returns are -20.6%, -37.5%, 59.4%, and 33.8%. (2) 1.3. Suppose an investor wishes to combine a T-bill, which offers the risk free rate of 4.1%, and shares in HPQ Inc. HPQ has an expected return of 11% and a standard deviation of 22%. The portfolio is to be comprised of 50/50 sp