Use excel in all of the problems. 6) An investor holds a portfolio of stocks and is considering investing in the DBB Company. The firm's prospects look neutral and you estimate the following probability distribution of possible returns: Conditions Returns on DBB Recession Below Average Average Above Average Boom -30% -15% 15% 28% 40% 0.10 0.20 0.40 0.20 0.10 Returns on DVi -15% 4% 8% 20% 2290 a)How much is the expected return for DBB? b)How much is the coefficient of variation for DBB? c) 99.73% of the time in what range (what specific values) would you expect the returns for DBB? Use the Empirical Rule Now let's say you want to add another asset, DVI, to your portfolio. You sell 30% of DBB to purchase DVI. How much is your expected return for this portfolio? e) How much is the coefficient of variation for the new portfolio? f)Do you consider this portfolio more or less risky than the individual stocks? Explain