7. For each day in 2010, calculate the 1-day, 1% VaRs using the following methods:

(a) Risk-

Metrics, that is, normal distribution with an exponential smoother on variance using the weight  D 0:94;

(b) NGARCH(1,1)-Qt.d/ with the parameters estimated in exercise 5; (c)

Historical Simulation; and

(d) Filtered Historical Simulation. Use a 251-day moving sample for Historical Simulation. Plot the VaRs.