October 28, 191 72.0 *Source of data: Alan S. Levitan and Sidney J. Baxendale, "Analyzing the Labor Efficiency Variance to Signal Process Engineering Problems," Journal of Cost Management 6, number 2, page 70. PR 10-38 (Static) Part 1: Calculate the following amounts. Req 1A 288.00 Req 1B 158.00 Required: 1-a. Which of the following amounts were used to calculate January's standard direct-labor hours? 1-b. Which of the following amounts were used to calculate January's direct-labor efficiency variance? 2. Calculate the following amounts. a. The standard direct-labor cost for each of the 10 months. b. For each month, 20 percent of the standard direct-labor cost. 3. Suppose management investigates all variances in excess of 20 percent of standard cost. Which months contain a variance that would be investigated? Complete this question by entering your answers in the tabs below. Req 2 and 3 1,960 Units produced Machine hours Actual direct-labor hours Standard ratio of direct-labor hours to machine hours Which of