15. For the following securities, implement the interval bisection method to produce a tabular analysis as in table 5.1. Determine how many steps need to be implemented to assure six decimal place yield accuracy.

(a) A 10-year zero-coupon bond with a price of 66.75 per 100 par, priced with a semiannual yield.

(b) A 10-year, 4% annual coupon bond, with a ‘‘sinking fund’’ payment of 50% of par at time 5 years, with a price of 101 per 100 par.

(c) A $25 million, 30-year mortgage repayment loan, issued at 6% monthly, at a price of $25.525 million.