
Explanation:
But first, we must determine
We know that
And
Ultimate access to all questions.
Q.70 A risk analyst uses the EWMA model with to carry out an update of correlation and covariance rates. On day , the observed percentage changes for variables and are $5%3\%$, respectively. Historical data puts the correlation estimate between $X$ and $Y$ at on day . If the estimated standard deviations on day are $2.9%3.5`%XYXYn$?
A
0.5612
B
0.0008
C
0.0011
D
0.0014
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