Levi's ships blue jeans to retailers who show seasonality in their purchasing habits during the month. Levi's sales are weak in the Week 1 of the month, about average in Weeks 2 and 3 and spike in Week 4. Given the following information, calculate the seasonal indices for each week of the month. If 50,000 blue jeans are forecasted for next month, how many should be forecasted to be sold in Week 4 ? (slide 17) 20,392 20,609 20.281 20,797 20,452 20,813 20,510