the yield to maturity on one-year zero coupon bonds is 4.76%. the yield to maturity on two-year zero coupon bonds is 6.78%. required: a. what is the forward rate of interest for the second year? (do not round intermediate calculations. round your answer to 2 decimal places.) b. according to the expectations hypothesis, what is the expected value of the one-year interest rate for next year? (do not round intermediate calculations. round your answer to 2 decimal places.)