(Appendix) Dave McGinnis Products makes NOTAM, a new health food. For a 50-pound batch, standard material and labor costs are as follows:LO.1

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Wheat Barley Corn Skilled labor Unskilled labor Quantity Unit Price Total 25.0 pounds $ 0.20 per pound $5.00 25.0 pounds 0.10 per pound 2.50 10.0 pounds 0.05 per pound 0.50 0.8 hour 12.00 per hour 9.60 8.00 per hour 1.60 0.2 hour During June, the following materials and labor were used in producing 600 batches of NOTAM: Wheat Barley Corn Skilled labor Unskilled labor 18,000 pounds at $0.22 per pound 14,000 pounds at $0.11 per pound 10,000 pounds at $0.04 per pound 400 hours at $12.25 per hour 260 hours at $8.00 per hour a. Calculate the material quantity, mix, and yield variances. b. Calculate the labor efficiency, mix, and yield variances.