Municipal bonds are yielding 4.4 percent if they are insured and 4.7 percent if they are uninsured. Your marginal tax rate is 28 percent and the inflation rate is 1.645%. Your equivalent taxable yield on the insured bonds is _____ percent and on the uninsured bonds is _____ percent. How would your answers change if your marginal tax rate falls to 13.5% and the inflation rate increases to 2.0639%? What would happen to the YTM of the uninsured bond if negative news was announced resulting in a decline in its credit rating? What would happen to the YTM of the insured bond if it suddenly lost its insurance?