
Explanation:
The 95% confidence interval is given by:
We need:
First, calculate the expected value:
Then calculate the confidence interval:
Therefore, the 95% confidence interval for interest rate movement 3 years from now is [-0.0645, 0.0695].
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A log-linear trend model is approximated on the interest rate (in %) movement in a certain market given as:
for the last 20 years. The standard deviation of the residual is 0.0342. Assuming that the residuals are white noise, what is the 95% confidence interval for interest rate movement 3 years from now.
A
[0.9517, 0.6257]
B
[-0.6917, 0.8259]
C
[-0.0645, 0.0695]
D
[0.7917, -0.6917]