Fill in the missing information in the following table. Assume that Portfolio AB is 70 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 12.5 % Stock B 22.5% Portfolio AB % 2015 2016 36.4% -37.1% % 2017 -19.8 % 47.1 % % 2018 % 2019 Average return Standard deviation % 25.7 % 13.6 % % % 16.3 % 24.9 % % % % %