=https%253A%252F%252Flms.mheducation.com%252Fmgh Saved Help Save & Fill in the missing information in the following table. Assume that Portfolio AB is 50 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 Portfolio AB Stock A 15.5 % 35.2 % 2015 2016 % Stock B 24.5 % -35.3 % 45.3 % % 2017 -17.4 % % 16.9 % % 2018 2019 25.1 % 14.8 % 26.7 % % % % % Average return Standard deviation % % %