hello can you please help me solve the following question for operations management:

The following table shows the actual demand observed over the last 11 years:

Year	1	2	3	4	5	6	7	8	9	10	11
Demand	7	9	4	7	11	8	11	14	8	9	7

This exercise contains only parts b, c, and d.

b) Using the 3-year moving average, provide the forecast from periods 4 through 12 (round your responses to one decimal place).

Year	4	5	6	7	8	9	10	11	12
Forecast	nothing	nothing	nothing	nothing	nothing	nothing	nothing	nothing	nothing

c) Using the 3-year weighted moving average with weights 0.20, 0.35, and 0.45, using 0.45 for the most recent period, provide the forecast from periods 4 through 12 (round your responses to two decimal places).

Year	4	5	6	7	8	9	10	11	12
Forecast	nothing	nothing	nothing	nothing	nothing	nothing	nothing	nothing	nothing

d) Mean absolute deviation for the forecast developed using the 3-year moving average is 2.49 and for the 3-year weighted moving average is 2.48.

Based on this information, the better forecast is achieved using the weighted moving average approach.