Lauren, Inc. uses a process costing system. The following data concern the operations of the company's first processing department for a recent month. 400 Work in process, beginning: Units in process Stage of completion with respect to materials Stage of completion with respect to conversion costs 90% 40% Costs in the beginning inventory: Materials Conversion costs $ 756 $4,448 Units started into production during the month 13,000 Costs added to production during the month: Materials Conversion costs $29,949 $362,127 100 Work in process, ending: Units in process Stage of completion with respect to materials Stage of completion with respect to conversion costs 50% 30% Required (20 points): Prepare a complete production report for the department using the weighted average method