Given the following demand information for a particular product, develop forecasts for the month of October using the following methods. (a) Three-point moving average (b) Four-point weighted moving average (c) Exponential smoothing (d) Linear regression Month Demand June 700 July 760 August 780 September 790 For exponential smoothing, assume that the forecast for September was 800 units and the smoothing constant is 0.3.