Problem 8-05 Two investments generated the following annual returns: Investment X Investment Y 20XO 12% 20% 20X1 16 22 20X2 34 14 20X3 16 9 20X4 10 20 a. What is the average annual return on each investment? Round your answers to one decimal place. The average annual rate of return on X: % The average annual rate of return on Y: % b. What is the standard deviation of the return on investments X and Y? Round your answers to two decimal places. Standard deviation of X: Standard deviation of Y: C. Based on the standard deviation, which investment was riskier? -Select- was riskier