You hear on the news that the S\&P 500 was down 1.8% today relative to the risk-free rate (the market's excess return was 1.8% ). You are thinking about your portfolio and your investments in Hewlett Packard and Proctor and Gamble. a. If Hewlett Packard's beta is 1.3 , what is your best guess as to Hewlett Packard's excess return today? b. If Proctor and Gamble's beta is 0.5 , what is your best guess as to P\&G's excess return today? a. If Hewlett Packard's beta is 1.3 , what is your best guess as to Hewlett Packard's excess return today? Hewlett Packard's excess return today is \%. (Round to one decimal place.)