Consider the following table: Stock Fund Bond Fund Probability 0.05 0.25 0.40 0.30 Rate of Return -30% -10% 15% 20% Rate of Re Severe recession Mild recession Normal growth 15% 6% -5% Boom a. Calculate the values of mean returm and variance for the stock fund. (Do not round Intermediate calculations. Round "Mean return" value to 1 Variance" to 2 decimal places.) Moan return Variance %-squared b. Calculate the value of the covarianoe between the stock and bond funds. (Negative value should be indicated by a minus sign. Do not round Intermedlate calculations. Round your answer to 2 decimal places) %-Squared