Hatenis and Laber vartances for chimgepyer for a olven bation havi bein sitabished. Direct manefials i2: dbeita 40.99) birect laber (0.15 hr, 9.17 .40) Ctandard prime coen becet matenaln Duret labor taszusi the 22 ase tris. Mequirvet: Material Variances Prio vartanse Uuble variances Sabur Varianens Rate varates imoiencr waitaner.