Consider the following table: Required: a. Calculate the values of mean return and varlance for the stock fund. (Do not round Intermedlate calculations. Round "Mean return" value to 1 decimal place and "Varlance" to 4 decimal places.)| Answer is complete but not entirely correct. b. Calculate the value of the covarlance between the stock and bond funds. (Negative value should be indlcated by a minus sign. Do not round Intermedlate calculations. Round your answer to 4 decimal places.) Answer is complete but not entirely correct