need help w b.

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 Dividend Stock price Boom Normal economy Recession $ 2.00 1.00 0.50 $60 53 Required: (a) Calculate the expected holding-period return and standard deviation of the holding-period return. All three scenarios are equally likely. (Round your answers to 2 decimal places. Omit the "%" sign in your response.) Expected return 700 % Standard deviation 58.49 % (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 9.2%. (Round your answers to 2 decimal places. Omit the'%" sign in your response.) Expected return Standard deviation