Consider the following data.

TimeDemand117221319423518616720818922102011151222Calculate

3

S3using simple exponential smoothing if

1

S1= 18.6 and = .2.

Select one:

a.

3

S3= 19.8

b.

3

S3= 18.6

c.

3

S3= 19.064

d.

3

S3= 19