For the data of Exercise 18.7, use the weighting constant α = 0.5 and exponential smoothing to
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Subscribers (Millions) 44.0 55.3 69.2 86.0 109.5 128.4 Subscribers (Millions) 140.8 158.7 182.1 207.9 233.0 255.4 5 Year 1996 1997 1998 1999 2000 2001 Year 2002 2003 2004 2005 2006 2007 2
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