need all three answers, the ones i got were wrong.

Consider the following table: Required: a. Calculate the values of mean return and variance for the stock fund. (Do not round intermediate calculations. return" value to 1 decimal place and "Variance" to 2 decimal places.) b. Calculate the value of the covariance between the stock and bond funds. (Negative which should be indic not round intermediate calculations. Round your answer to 2 decimal places.)