Historical Returns: Expected and Required Rates of Return You have observed the following returns over time: Assume that the risk-free rate is 6% and the market risk premium is 5%. a. What are the betas of Stocks X and Y ? Do not round intermediate calculations. Round your answers to two decimal places: StockXstockY: b. What are the required rates of retum on 5 tocks X and Y Do not round intermediate calculations. Round your answers to two decimal places: stock x Stock Y c. What is the required rate of return on a portfollo consisting of 80% of stock and 20% of 5 tock Y Do not round intermediate caiculations. Round your answer to two decimal places