It calculates total fixed cost try muy QUESTION 5 The production department should generally be responsible for material price variances that resulted from: changes in the market prices of raw materials purchase of the wrong grade of materials purchases made in uneconomical lot-sizes rush orders arising from poor production scheduling QUESTION 6 A favorable efficiency variance for direct materials might indicate that higher quality materials were purchased work is scheduled inefficiently there is an unexpected increase in direct labor rates management hired under-skilled workers