point(s) possible Suppose you are given the following demand and forecast data for the past four quarters: Quarter Winter Spring Summer Fall Demand 270 335 315 385 Forecast 240 340 360 385 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 Winter Spring Demand 270 Seasonal Index Forecast 240 340 335 Summer 315 360 Fali 385 385 The fall quarter really need a seasonal adjustment index. ar Please copy and paste data from text area below. Selected delimiter: Tab Quarter Demand Winter 270 Spring 335 Summer 315 Fall 385 Forecast 240 340 360 385 s Done