The stock of Business Adventures sells for $70 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: Stock Price $78 Boom Normal economy Recession Dividend $2.50 1.30 0.90 75 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 5%. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Expected return Standard deviation