Question #7[8+4 points]: (a) For the data in Question 3 use Additive Decomposition time series method assuming no trend to estimate the level and seasonal components for Spring and Fall. (b) Use Additive Holt Winter method with no trend to derive formulas for level, seasonal component and point forecast. THE END Question #7[8+4 points]: (a) For the data in Question 3 use Additive Decomposition time series method assuming no trend to estimate the level and seasonal components for Spring and Fall. (b) Use Additive Holt Winter method with no trend to derive formulas for level, seasonal component and point forecast. THE END