Consider the following table: Probability 0.05 Scenario Severe recession Mild recession Normal growth Boom Stock Fund Rate of Return -25% -5% 10% 15% Bond Fund Rate of Return -10% 16% 9% -6% 0.25 0.40 0.30 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 2 decimal places.) Mean return % Variance 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 2 decimal places.) Covariance