Fill in the missing information in the following table. Assume that Portfolio AB is 40 percent invested in Stock A. (A negative value should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.) Annual Returns on Stocks A and B Year Stock A Stock B Portfolio AB 2015 11.0 % 19.0 % % 2016 33.0 % -32.0 % % 2017 -13.0 % 42.0 % % 2018 24.0 % 18.0 % % 2019 17.0 % 30.0 % % Average return % % % Standard deviation % % %