(a) Plot the data on U.S. general aviation shipments. U.S. Manufactured General Aviation Shipments, 1984-2016 Planes 3,079 1,585 1,334 1,323 1,516 1,615 Year PLanes PLanes 2,816 2,634 2,207 2,137 2,355 2,857 Year Planes Year Year 1984 2,431 2,029 1,495 1,885 1,212 1,535 1,144 1,021 1992 941 2000 2008 1985 1993 964 2001 2009 1986 1994 928 2002 2010 1,877 1,115 1,549 1987 1995 2003 2011 1988 1996 2004 2012 1989 1997 2005 2013 1990 1998 2,200 2,504 2006 3,147 3,279 2014 1,631 1,592 1991 1999 2007 2015 3500 Plot A US Aviation Shipments (1984-2015) 3000 2500 Manufactured General 2000 1500 1000 500 1984 1986 3500 Plot B US Aviation Shipments (1984-2015) 1988 1990 1992 3000 2500 Manufactured General 1994 2000 1998 2000 2002 1500 1000 2006 2008 2010 2012 500 2014 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2006 2008 otot 2012 2014 1996 2004 2004 O Plot A O Plot B O Plot C O Plot D (b) Describe the pattern and discuss possible causes. Hint What economic factors affect major capital investments? (You may select more than one answer. Click the box with a check mark for the correct answer and double click to empty the box for the wrong answer.) The factors affecting major capital investments: 7 Business cycles 2 Interest rates 2 Foreign demend 2 Forecesting (e) Make a forecast for 2016 using a method of your choice (including a judgment forecast). Justify your method. (Round your answer to the nearest whole number.) The two year moving average forecast for 2016 is