Demand Data for Number of Packed Food Sold by Advanced $\mathrm{n}$

Demand data for number of packed food sold by Advanced Airlines on each day of the first two weeks of August 2005 is given in the table below.

(A) Using the centered moving average method, generate a set of centered moving averages using $\mathrm{n}$ , the number of periods set to 3 .
(B) Fit a trend line for the centered moving average data, using $\mathrm{t}=1$ for 8-1-2005.
(C) Estimate seasonal index Monday.
(D) Make a seasonally adjusted trend line forecast for 8-15-2005.