Consider the following table: Severe recession Mild recession Normal growth Boom Scenario. Mean return Variance Covariance Stock Fund Probability Rate of Return. 0.05 0.25 0.40 0.30 % -25% -58 10% 15% Required: 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.) Bond Fund Rate of Return. -10% 16% 9% -6% 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.)