Answer:
Explanation: Unbiased Expectations Theory states that current long-term interest rates contain an implicit prediction of future short-term interest rates. More specifically, the theory states that an investor should earn the same amount of interest from an investment in a single two-year bond today as that person would with two consecutive investments in one-year bonds.
From the above question:
1 + 1R5= {(1 + 1R4)4(1 + E(5r1))}1/51.0215
= {(1.016)4(1 + E(5r1))}1/5(1.0215)5
= (1.016)4(1 + E(5r1))(1.0215)5 / (1.016)4
= 1 + E(5r1)1 + E(5r1)
= 1.0438E (5r1) = 4.38%