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

A series of equal payments made at regular intervals over a specified period of time.

Nominal Interest

The interest rate stated on a loan or investment agreement before the adjustment for inflation.

Effective Rate

The effective rate is the actual interest rate on an investment or loan, taking into account the compounding of interest, as opposed to the nominal or stated rate.