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The expected return of Sarasota is 15.8 percent, and the expected return of Shamrock is 23.8 percent. Their standard deviations are 10.8 percent and 23.8 percent, respectively, and the correlation coefficient between them is zero. What is the expected return and standard deviation of a portfolio composed of 20 percent Sarasota and 80 percent Shamrock? (Round intermediate calculations to 6 decimal places, e.g. 31.212564 and final answers to 2 decimal places, e.g. 15.25%.) The expected return Standard deviation of portfolio % do % What is the expected return and standard deviation of a portfolio composed of 80 percent Sarasota and 20 percent Shamrock? (Round intermediate calculations to 6 decimal places, e.g. 31.212564 and final answers to 2 decimal places, e.g. 15.25%.) The expected return Standard deviation of portfolio % % Would a risk-averse investor hold a portfolio made up of 100 percent of Sarasota