1. 15%) Use the data in the following table to calculate
   1. The effective duration when rates increase from 4% to 4.2%
   2. The effective duration when rates decrease from 4% to 3.5%

4% Coupon 10-year T-note
Yield to Maturity	Price
4.50%	97.78
4.20%	99.11
4.00%	100.00
3.80%	100.90
3.50%	102.28