Calculate the expected return on a portfolio of 55 percent Roll and 45 percent Ross by filling in the following table:

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(2) Probability of State of Economy (4) (3) Portfolio Return if State Occurs (1) State of Economy Product (2) × (3) Bust Boom State of Economy Probability of State of Economy Security Returns if State Occurs Roll Ross Bust .40 -10% 21% 8. Boom .60 28