QUESTION A forecasting method has produced the following over the past five months. What is the mean squared error (MSE)? Month Forecast Actual Jan 4 Feb 10 March 5 April 1 May 8 Ba 10 4 14 6 QUESTION 13 Bob the Builder has gone back into the lumber business and uses a weighted moving average method to forecast nail sales Weights of 2.5 to the previous month's demand, 2.0 to demand two months ago, and 1.50 to demand three months ago. If sales amounted to 1565 pounds of nails in May, 1724 pounds in June, and 1800 pounds in July, what should be the forecast for August? Month Weight Demand May 1.5 1565 June 1724 July 1866 August 2.0 2.5 A forecasting method has produced the following over the past six months. What is the mean absolute deviation? Month Forecast Actual Jan 3 15 Feb 5 10 March 21 4 9 14 April May 8 20 June 17 10 QUESTION 17 The critical path of the project outlined below has been determined of B-D-G-H. What is the slack time for activity G? Activity Time (wks) Immediate Predecessor(s) A 7 A, B, C. B C D E F G H N22 8 3 8 9 alt 7 HUEDO G, F