Fill in the missing information in the following table. Assume that Portfolio AB is 70 percent invested in Stock A. Note: 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 2018 13.5 % 21.5% % 2019 34.0 % -33.5 % % 2020 -15.0 % 43.5 % % 2021 24.5 % 17.5 % % 2022 16.0 % 28.5 % % Average return % % 96 Standard deviation % % 96