On March 11, the existing or current (spot) 1-,2-,3- , and4-year zero-coupon Treasury security rates were as follows: 1R_{1}= 0.851, 1R_{2} = 1.451, 1R_{3} = 1.854, 1R_{4} = 2.004 Using theunbiased On March 11, the existing or current (spot) 1-, 2-,3-, and 4-year zero-coupon Treasury security rates were as follows: \[ { }_{1} R_{1}=0.852, \quad{ }^{R_{2}}=1.458, \quad 1^{R_{3}}=1.858,1 R_{4}=2.0 2 answers