A salesperson at a local store has been monitoring the demand for 50-ounce liquid detergent bottles of a particular brand. The actual demand during the last 5 weeks is shown below: WEEK ACTUAL DEMAND (number of liquid detergent bottles sold)
Five weeks ago 400
Four weeks ago 410
Three weeks ago 421
Two weeks ago 430
One week ago 440
THIS WEEK ACTUAL DEMAND NOT KNOWN
Use trend-adjusted exponential smoothing to obtain the demand forecast for THIS WEEK.
Use the following: Exponentially smoothed forecast five weeks ago = 389 liquid detergent bottles
Exponentially smoothed trend estimate five weeks ago = 10 liquid detergent bottles
The smoothing constants: a =0.4 , B = 0.5.