The stock of Business Adventures sells for $50 a share. Its likely dividend payout and end-of-year price depend on the state of the economy by the end of the year as follows: Boom Normal ecmony Recession Dividend $2.00 1.60 0.80 Stock Price $60 53 44 a. Calculate the expected holding period return and standard deviation of the holding period return. All three scenarios are equally likely. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Expected return Standard deviation % b. Calculate the expected return and standard deviation of a portfolio invested half in Business Adventures and half in Treasury bills, The return on bills is 4%. (Do not round intermediate calculations, Round your answers to 2 decimal places.) Expected return Standard deviation % %