Final answer:
The pure expectations theory suggests that the yield on a longer-term security can be estimated by taking an average of the expected future short-term yields. In this case, the annualized yield on a four-year security today, based on the given information, is 2.75%.
Step-by-step explanation:
The pure expectations theory suggests that the yield on a longer-term security can be estimated by taking an average of the expected future short-term yields. In this case, using the pure expectations theory, we can calculate the annualized yield on a four-year security today.
Based on the given information, the expected annualized yields for each year are 0.03, 0.02, 0.02, and 0.04 respectively. Taking the average of these yields, we get:
(0.03 + 0.02 + 0.02 + 0.04) / 4 = 0.0275 or 2.75%
Therefore, the annualized yield on a four-year security today, according to the pure expectations theory, is 2.75%.