Your investment has a 10% chance of earning a 40% return, a 25% chance of earning a 19% rate of return, a 35% chance of earning a 6.5% rate of return, a 25% chance of losing 11%,and a 5% chance of losing 38%. What is the standard deviation of this investment? Enter your answer rounded to two decimal places. Do not enter % in the answer box. For example, if your answer is 0.12345 or 12.345% then enter as 12.35 in the answer box.