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EXPECTED RETURNA stock's returns have the following distribution:Demand for theCompany's ProductsProbability of ThisDemand OccurringRate of Return IfThis Demand OccursWeak0.1(38%)Below average0.2(12) Average0.312 Above average0.125 Strong0.372 1.0Calculate the stock's expected return. Round your answer to twodecimal places.%Calculate the stock's standard deviation. Do not roundintermediate calculations. Round your answer to two decimalplaces.%Calculate the stock's coefficient of variation. Round youranswer to two decimal places.EXPECTED RETURNSStocks A and B have the following probability distributions ofexpected future returns:ProbabilityAB0.2(12%)(37%)0.2400.314220.219290.13549Calculate the expected rate of return, rB, for StockB (rA = 9.90%.) Do not round intermediate calculations.Round your answer to two decimal places.%Calculate the standard deviation of expected returns,?A, for Stock A (?B = 27.01%.) Do not roundintermediate calculations. Round your answer to two decimalplaces.%Now calculate the coefficient of variation for Stock B. Roundyour answer to two decimal places.