Round up to two decimal places for final answers (at least four decimal places for intermediate calculations).

4 You've observed the following returns on Doyscher Corporation's stock over the past three years: -11.0%, 15.0%, and 12% What was the standard deviation of the returns over this period? 5 You own a portfolio that is 38.5% invested in StockX, 41.5% in Stock Y, and 20% in Stock Z. The expected returns on these three stocks are 10.7%, 11.7%, and 15.6%, respectively. What is the expected return on the portfolio