(a) Which ARMA+GARCH model is being fit? Write down the model using the same parameter names as in the R output.  (b) What are the estimates of each of the parameters in the model? Next, plot the...

(a) Which ARMA+GARCH model is being fit? Write down the model using the same parameter names as in the R output.

 (b) What are the estimates of each of the parameters in the model?

Next, plot the residuals (ordinary or raw) and standardized residuals in various ways using the code below. The standardized residuals are best for checking the model, but the residuals are useful to see if there are GARCH effects in the series.