eBook Problem 8-05 Two investments generated the following annual returns: Investment X Investment Y 20X0 11 % 18 % 20X1 23 20 20X2 22 12 20X3 21 9 20X4 9 14 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: % 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: Based on the standard deviation, which investment was riskier? (investX investment Y)was riskier.