a. Given the followng holding-period returns, , compute the average roturns and the standard deviations for the Zemin Corporation and for the markel yearly retums by mulliplying the average monthly returns by 12 .) c. How does Zemin's historical average return compare with the return you beliewo you should oxpect based on the capital asset pricing model and ine firmin systematic risk? a. Given the holding-period teturns shown in the table, the average monthly return for the Zemin Corporation is Data table