Imagine that you purchased an asset for $55 last year. imagine further that you are expecting the following returns overtime: $60, $65, $66, and $70, what will be your holding period return? suppose the probabilities 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) referring to part b. above, suppose the market and risk free rates are 5 percent and 3 percent respectively, what will be the sharpe ratio?