focus on the c part of the question. The demand for a product of a company in each of the last twelve months is shown in the table below; Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan...

focus on the c part of the question.

The demand for a product of a company in each of the last twelve months is shown in the table below;

Use the table to compute the following forecast demand for the company;

a. Four months simple moving average

 b.Four months weighted moving average using the weight of 40%, 30% and 20% and 10%respectively.

c. Prepare exponential smoothing forecast using smoothing constants of 0.3 and 0.5

 present the final answer in a table form and writed down all calculations clearly