Consider the following table: Severe recession Mid recession Normal growth 0.10 0.15 0.35 0.40 Stock Fund Rabe of Return -37% -13% 19% 26% Bond Fund Rate of Return -14% 10% 6% -3% Boom a. Calculate the values of mean return and variance for the stock fund. (Do not round intermediate calculations. Round "Mean return" value to 1 decimal place and Variance"to 4 decimal places Mean retunm Variance %-Squared b. Calculate the value of the covariance between the stock and bond funds. (Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 4 decimal places) %-Squared