The accompanying data table show the percentage of tax returns filed electronically in a city from 2000 to 2009.

Year	Percentage
2000	27
2001	33
2002	36
2003	38
2004	46
2005	52
2006	53
2007	58
2008	62
2009	66

a) Forecast the percentage of tax returns that will be electronically filed for 2010 using exponential smoothing with a=0.1.

The percentage of tax returns that will be electronically filed for 2010 using exponential smoothing with =0.1 is _____

(Round to the nearest integer as needed.)

b) Calculate the MAD for the forecast in part a.

MAD=______

(Round to two decimal places as needed.)

c) The percentage of tax returns that will be electronically filed for 2010 using exponential smoothing with trend adjustment using =0.5 and =0.4 is ______

(Round to the nearest integer as needed.)

d) Calculate the MAD for the forecast in part c.

MAD=______

(Round to two decimal places as needed.)