Fill in the missing information in the following table. Assume that Portfolio AB is 60 percent invest Stock A. (Negative values should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. Omit the "%" sign in your response.) ed in Annual Returns on Stocks A and B Stock A Stock B Portfolio AB Year 2009 2010 2011 12% 33.4% 13.8% 24.2% 16.6% 20% -32.6% 42.6% 17.8% 29.4% 2012 2013 Average return Standard deviation