You hold the positions in the table below. Assumed Price Shares Assumed Beta Amazon.com $ 40.00 106 4.35 Family Dollar Stores 30.00 193 1.40 McKesson Corp 75.00 150 0.57 Schering-Plough Corp 25.50 354 1.25 What is the beta of your portfolio? (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Portfolio beta If you expect the market to earn 15.90 percent and the risk-free rate is 5.50 percent, what is the required return of the portfolio?