The accompanying data represent the coffee exports(in thousands of 60 kgbags) by a certain country from 2004 to 2016. Complete parts below.

Year Exports (thousands 60 kg bag)

2004 10190

2005 10822

2006 10955

2007 11260

2008 11113

2009 7910

2010 7789

2011 7710

2012 7189

2013 9702

2014 10955

2015 12698

2016 12839

1. Compute thethree-year moving averages for this annual time series.

2005-2015

2.Using a smoothing coefficient of W=0.50, exponentially smooth the series and plot the result.

3.What is the exponentially smoothed forecast for2017?

4.Repeat(c) and(d), using a smoothing coefficient of W=0.25.

5.Compare the results of (d) and (e).

6.What conclusions can be reached about the exports of coffee in thiscountry?