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Scenario Severe recession Mild recession Normal growth Boom Probability 0.10 0.15 0.35 0.40 Stock Fund Rate of Return -420 -181 201 278 Bond Fund Rate of Return -158 78 91 -6+ 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.) Answer is complete but not entirely correct. Mean return Variance 10.9% % 537.5900 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.) Answer is complete but not entirely correct. Covariance 5.3759 % Squared