a. Describe how demand forecasts with confidence intervals would be useful for ordering office supplies b. Describe how demand forecasts with confidence intervals would be useful for planning repair/maintenance of equipment c. Describe how demand forecasts with confidence intervals would be useful for preparing a budget for a district sales territory d. Describe how demand forecasts with confidence intervals would be useful for scheduling employee vacations e. Describe how demand forecasts with confidence intervals would be useful for planning a sales employee recruitment and training program