the stock of business adventures sells for $60 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: dividend stock price boom $ 2.00 $ 73 normal economy 1.50 63 recession 0.70 59 required: 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.) 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.)