The standard deviation of the market-index portfolio is 10%. Stock A has a beta of 2.50 and a residual standard deviation of 20%. Calculate the total...

The standard deviation of the market-index portfolio is 10%. Stock A has a beta of 2.50 and a residual standard deviation of 20%.

a. Calculate the total variance for an increase of 0.10 in its beta. (Do not round intermediate calculations. Round your answer to 4 decimal places.)

Total variance           

b. Calculate the total variance for an increase of 1.24% in its residual standard deviation. (Do not round intermediate calculations. Round your answer to 4 decimal places.)

Total variance