(Standard deviation) Given the probabilities and returns for Mik's Corporation in the popup window, find the standard deviation. Mik's standard deviation is %. (Round to two decimal places) X i Data Table (Click on the following icon in order to copy its contents into a spreadsheet.) PROBABILITY 0.10 0.30 0.50 0.10 RETURNS 10% 3% 20% 10% Print Done (Portfolio beta) Assume you have the following portfolio: What is the portfolio's beta? The portfolio's beta is (Round to two decimal places.) i X Data Table (Click on the following icon in order to copy its contents into a spreadsheet.) STOCK Apple Green Mountain Coffee Disney Target STOCK WEIGHT 31% 24% 28% 17% BETA 1.58 1.39 1.09 1.22 Print Done . (Holding-period dollar gain and return) Suppose you purchased 15 shares of Diamond Company stock for $22.29 per share on May 1, 2016. On September 1 of the same year, you sold 15 shares of the stock for $25.52. Calculate the holding-period dollar gain for the shares you sold, assuming no dividend was distributed, and the holding-period rate of return. a. The holding-period dollar gain for the shares you sold is $ Enter a negative number if it is a loss. (Round to the nearest cent.) b. The holding-period rate of return is %. (Round to two decimal places.)