The stock of Bushess Adventures selis for $30 a share. its likely dividend payout and end-of-year price depend on the state of the economy by the end of the yoar as follows: Required: a. Calculate the expected holding-period return and standard deylation of the holding-period return. All three scenarios are equally thely. (Do not round intermediate calculations. Round your answers to 2 decimal places.) b. Calculate the evpected return and standard deviation of a portolo invested half in Business Adventures and half in Treasury bilis. The return on bilis is 4%. (Do not round intermediate calculations. Round your answers to 2 decimal places)