Question: Problem 2.17 Using a four-month moving average, determine the one-step-ahead forecasts for July through December. Problem 2.18 Using a four-month moving average, determine the two-step-ahead

Problem 2.17 Using a four-month moving average, determine the one-step-ahead forecasts for July through December. Problem 2.18 Using a four-month moving average, determine the two-step-ahead foreeast for July through December. (Hint:| The two-step-ahead forecast for July is based on the observed demands in February through May.) Problem 2.19 Compute the MAD for the forecasts obtained in problems 17 and 18. Which method gave better results? Based on foreeasting theory, which method should have given better results

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