Answer:
Next period forecast is 990 units
Step-by-step explanation:
The next period forecast van be computed thus:
this period forecast based on 99 periods
this period forecast figure was 1000 units
This period actual demand was 0 units
note the that the next period forecast would be based on 100 periods(current forecast periods plus 1)
100 periods* next period forecast=this period forecast*99 periods+actual demand this period
100* next period forecast=1000*99+0
next period forecast=(1000*99+0)/100
next period forecast =990 units
This fact that this period actual demand was zero has made the next forecast to reduce viz-a-viz this period forecast of 1000 units