According to Heizer & Render, a forecast is usually classified by the future time horizon that it covers. Time horizons fall into three different categories: short-range forecast, medium-range forecast, and long-range forecast. Short-range forecast is from three months to one year. It is used for planning purchasing, job assignments, job scheduling, workforce levels, and production levels. Medium-range forecast ranges from three months to three years. It is used for planning, budgeting and production planning, cash budgeting, and analysis of various operating plans. Long-range forecast is generally three or more years in time. It is used in planning new products, capital expenditures, facility location or expansion, and research and development.…