imagine that you purchased an asset for $54. imagine further that you are expecting the following returns over time $55, $60,$65,and $70, what will be your holding period return? suppose the possibilities that are associated with your expectations are 0.30,0.25,0.25.and 0.2, what will be your expected return? (b) estimate the variance and standard deviation (c) suppose the market and risk free rates are 6 and 4 percent respectively, what will be the sharpe ratio?