Fill in the missing information in the following table. Assume that Portfolio AB is 50 percent invested in 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.) Annual Returns on Stocks A and B Stock A Year 2009 2010 2011 2012 2013 Average return Standard deviation Stock B Portfolio AB 15.5% 35.2% -17.4% 25.1% 14.8% 14.64 % 24.5% -35.3% 45.3% 16.9% 267% 15.62 % 0 0 0 0 0 0