2. Historical demand for a product is Demand Months January 12 February 11 March 15 April 12 May June 16 15 a. Using a weighted moving average with weights of 0.60,

0.30, and 0.10, find the July forecast. b. Using a simple three-month moving average, find the July forecast. c. Using single exponential smoothing with Alpha=0.2 and a June forecast = 13, find the July forecast. Make whatever assumptions you wish. d. Using simple linear regression analysis, calculate the regression equation for the preceding demand data. e. Using the regression equation in d, calculate the forecast for July.