Final answer:
The dollar amount of each coupon payment for the bond is $3,600.
Step-by-step explanation:
To find the dollar amount of each coupon payment, we need to calculate the semiannual interest payment. The face value of the bond is $120,000 with a 6% annual coupon rate. This means each year the bond pays 6% of the face value as interest. Since interest payments are made semiannually, the semiannual interest payment is (6% / 2) x $120,000 = $3,600. Therefore, your friend would receive $3,600 as coupon payment each March and September.