Consider a $48,000 portfolio consisting of three stocks. Their values and expected returns are as follows: What is the weighted-average expected return on the portfolio? Round your answer to one decimal place. % Two investments generated the following annual returns: 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? was riskier