Required:1. Assume that the average labor time is 0.768 hour per unit after the

Required:1. Assume that the average labor time is 0.768 hour per unit after the learning effects are achieved. Using this information prepare a standard cost sheet that details the standard service cost per unit. Round costs to two decimal places.2. Given the per-unit labor standard set would you expect a favorable or an unfavorable labor efficiency? Explain. Calculate the labor efficiency variance for servicing the first 320 units.3. Assuming no further improvement in labor time per unit is possible past 320 units explain why the cumulative average time per unit at 640 is lower than the time at 320 units. Show that the standard labor time should be 0.768 hour per unit. Explain why this value is a good choice for the per-unit labor standard.