Suppose you are given the following demand and fore forecast data for the past four quarters: Quarter Demand Forecast Winter 270 240 Spring 335 340 Summer 315 360 Fall 385 385 Develop a seasonal index for each of the quarters. Does the fall quarter really need a seasonal adjustment index? Calculate the seasonal adjustment indices for all quarters (enter your responses rounded to two decimal places) Quarter Demand Forecast Seasonal index Winter 270 240 Spring 335 340 Summer 315 360 Fall 385 385 The fall quarter really need a seasonal adjustment index *