Turow Trailers assembles horse trailers. Two models are manufactured: G7 and V8. While l...

Turow Trailers assembles horse trailers. Two models are manufactured: G7 and V8. While laborintensive, the production process is not very complicated. The single plant produces all the trailers with 48 work teams of two or three workers. Sixteen supervisors oversee the work teams. Materials handlers deliver all the parts needed for each trailer to the work team. Human resources, accounting, inspection, purchasing, and tools are the other major overhead departments. Some operating statistics for 2010 and 2011 follow.

Required:

a. Calculate all the overhead variances for both 2010 and 2011.

b. Discuss who in the plant should be held responsible for each overhead variance.