The stock of Business Adventures sells for $50 a share. ts likely dividend payout and end-of-year price depend on the state of the economy by the end of the year as follows: Dividend Stock Price $58 52 43 $3.00 1.40 0.70 Boom Normal economy Recession 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 3%. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Expected return Standard deviation