Calculate the nominal and effective rate of interest for the following ordinary annuity. Determine the nominal interest rate whose compounding interval equals the payment interval.

Ordinary Annuity

Invariable payments issued at the terminal of consecutive intervals over an exact length of existence.

Nominal Interest

The rate of interest before adjustments for inflation, as opposed to real interest rates which are adjusted.

Effective Rate

The actual annual interest rate that is earned or paid on an investment, taking compounding into account.