Apple has made available the following information for materials (pints) used in the past 6 weeks

week of	Pints Used
Aug 31	360
Sept 7	389
Sept 14	410
Sept 21	381
Sept 28	368
Octob 5	374

Given this information determine the following.

1.4.1 Forecast the demand for the week of Oct 12 using a 3-week moving average. (2 Marks)

1.4.2 Using a 3-week weighted moving average with weights of 0.1, 0.3, 0.6 for the most recent week. Forecast demand for the week of October 12. (3 Marks)

1.4.3 Compute the forecast for the week of October 12, using exponential smoothing (given the forecast for August 31 of 360 pints and a smoothing constant a=0.2). (6 Marks)

1.4.4 The demand for electric power supplied by Eskom over the period 2003 to 2009 is shown in the table below in megawatts. Nike wants you to forecast demand for 2010 by using the simple linear regression method (9

year	time	demand
2003	1	74
2004	2	79
2005	3	80
2006	4	90
2007	5	105
2008	6	142
2009	7	122