Answer:
Filling the missing information:
Features          IBM Coupon Bond    AOL Coupon Bond
Face value (Par)           $5,000                     $5,000
Coupon Rate                     9.5%                      12.8%
Yield to maturity                6.5%                       5.5%
Years to maturity              15                           30
Price                            $6,410.40                  $8,302.28
Explanation:
a) Data and Calculations:
Features          IBM Coupon Bond    AOL Coupon Bond
Face value (Par)           $5,000                     $5,000
Coupon Rate                     9.5%                              ?
Yield to maturity                6.5%                       5.5%
Years to maturity              15                           30
Price                                    ?                        $8,302.28
Features          IBM Coupon Bond    AOL Coupon Bond
Face value (Par)           $5,000                     $5,000
Coupon Rate                     9.5%                      12.8% ($640/$5,000 * 100)
Yield to maturity                6.5%                       5.5%
Years to maturity              15                           30
Price                            $6,410.40                  $8,302.28
Price of IBM Coupon Bond:
N (# of periods)  15
I/Y (Interest per year)  6.5
PMT (Periodic Payment)  475
FV (Future Value)  5000
Results
PV = $6,410.40
Sum of all periodic payments	$7,125.00
Total Interest	$5,714.60
Coupon interest rate of AOL Bond:
N (# of periods)  30
I/Y (Interest per year)  5.5
PV (Present Value)  8302.28
FV (Future Value)  5000
Results
PMT = $640.27
Sum of all periodic payments	$-19,208.06
Total Interest	$5,905.78
Coupon interest rate = 12.8% ($640/$5,000 * 100)