Answer:
YTM = 6.42%
Step-by-step explanation:
current market value = $1,000 x 98% = $980
n = (15 - 2) x 2 = 26
coupon = $1,000 x 6.2% x 1/2 = $31
face value = $1,000
YTM = [coupon + [(face value - market value)/n]} / [(face value + market value)/2]
YTM = [31 + [(1,000 - 980)/26]} / [(1,000 + 980)/2]
YTM = (31 + 0.77) / 990 = 31.77 / 990 = 0.03209 x 2 (annual yield) = 0.641818 = 6.42%