Historical Returns: Expected and Required Rates of Return You have observed the following returns over times Assume that the risk-free rate is 5% and the market risk premium is 4%. a. What are the betas of 5 tocks X and y ? Do not round intermediate calculations. Rocind your answers to two decimal places: StockXistocky: b. What are the required rates of return on 5 tocks X and Y7 Do noc round intermediate calculations. Reund your answers to two decinal piaces. stock x : itock x c. What is the required rate of ceturn on a portfolio consisting of bos of stock x and 2046 of stock 7 Do not round intermedime caicuationd. Apound your aniker to two decimal places