You hold the positions in the table below. Amazon.com Family Dollar Stores McKesson Corp. Schering-Plough Corp. Price $ 45.00 33.00 70.00 32.00 Shares 161 208 146 471 Beta 4.10 2.90 0.73 1.04 What is the beta of your portfolio? (Do not round intermediate calculations and round your final answer to 2 decimal places.) Portfolio beta % If you expect the market to earn 18.20 percent and the risk-free rate is 8.00 percent, what is the required return of the portfolio? (Do not round intermediate calculations and round your final answer to 2 decimal places.) Required return %