Marigold Incasements manufactures protective cases for MP3 players. During November, the company's workers clocked 850 more direct labor hours than the flexible budget amount of 25,370 hours to complete 108,600 cases for the Christmas season. All workers were paid $ 9.00 per hour, which was $ 0.50 less than the standard wage rate. Calculate Marigold's direct labor efficiency variance. Direct labor efficiency variance