At the end of Section 23.8 , the VaR and ES for the four-index example were calculated using the model-building approach. How do the VaR and ES estimates change if the investment is \$$2.5 million in each index? Carry out calculations when (a) volatilities and correlations are estimated using the equally weighted model and (b) when they are estimated using the EWMA model with $\lambda=0,94$$. Use the spreadsheets on the author's website.