You hold the positions in the table below. Price Shares Beta Amazon.com $ 48.00 175 4.06 Family Dollar Stores 29.00 179 2.20 McKesson Corp. 76.00 155 0.62 Schering-Plough Corp. 33.00 309 1.22 What is the beta of your portfolio? (Do not round intermediate calculations and round your final answer to 2 decimal places.) If you expect the market to earn 14.60 percent and the risk-free rate is 4.20 percent, what is the required return of the portfolio