(Standard deviation) Given the following probabilities and returns for Mik's Corporation, find the standard deviation. PROBABILITY RETURNS 0.15 7% 0.45 6% 0.25 20% 0.15 10% (Click on the icon located on the top-right comer of the data table above in order to copy its contents into a spreadsheet.) Mik's standard deviation is %. (Round to two decimal places)