using the information from exhibit 8 in the brazillian beer case study estimate the expected return and risk of the shares of brahma and antartica.

b.) estimate the expected return of a portfolio where with 50% of the portfolio is invested in brahma and 50% in antartica if the correlation coefficient between the returns on the shares is 45%

c.) define the concept of beta and discuss how an investor may use the concept of beta in deciding whether to add brahma and / or antartica to his or her portfolio