A portfolio manager summarizes the input from the macro and micro forecasters in the following table: vicro Forecasts Asset Stock A Stock B Stock C Stock D Expected Return(%) 25 19 16 13 Residual Standard Deviation (%) 56 70 61 53 Beta 0.5 Macro Forecasts Standard Deviation(%) 0 21 Expected Return(%) Asset T-bills Passive equity portfolio 15 a. Calculate expected excess returns, alpha values, and residual variances for these stocks. (Negative values should be indicated by a minus sign. Do not round intermediate calculations. Round "Alpha values" to 1 decimal placeOmit the '%" sign in your response.) Stock A Stock B Stock C Stock D Excess returns Alpha values Residual variances 0 0 0 0 0 0 0 0 0 A portfolio manager summarizes the input from the macro and micro forecasters in the following table: vicro Forecasts Asset Stock A Stock B Stock C Stock D Expected Return(%) 25 19 16 13 Residual Standard Deviation (%) 56 70 61 53 Beta 0.5 Macro Forecasts Standard Deviation(%) 0 21 Expected Return(%) Asset T-bills Passive equity portfolio 15 a. Calculate expected excess returns, alpha values, and residual variances for these stocks. (Negative values should be indicated by a minus sign. Do not round intermediate calculations. Round "Alpha values" to 1 decimal placeOmit the '%" sign in your response.) Stock A Stock B Stock C Stock D Excess returns Alpha values Residual variances 0 0 0 0 0 0 0 0 0