(a) Suppose that the Fisher hypothesis holds for an economy that has an expected real interest rate r of 2%. For each of the expected inflation rates e of 2, 4, 6, 8, and 10%, calculate the nominal interest rate i and the after-tax expected real interest rate ia if a tax rate t of 20% is imposed on the nominal interest rates. (b) Discuss the possible societal effects of taxes on nominal interest rates.