George Kyparisis owns a company that manufactures sailboats. Actual demand for? George's sailboats during each of the past four seasons was as? follows:
Season 1 2 3 4
Winter 1,440 1,280 1,080 920
Spring 1,520 1,440 1,620 1,500
Summer 1,000 2,140 2,040 2,000
Fall 640 770 690 520
George has forecasted that annual demand for his sailboats in year 5 will equal 6000 sailboats.
Based on the given data and using the multiplicative seasonal? model, the demand level for? George's sailboats in the spring of year 5 will be
nothing
sailboats ?(enter a whole ?number).