La Ventana Window Company La Ventana received some complaints about narrow, misfitting gaps between the upper and lower window sashes. The plant manager wants to evaluate the capability of a critical cutting operation that he suspects might be the source of the gap problem. The nominal specification for this cutting operation is 25.500 inches with a tolerance of 0.030 inch. Inspect five consecutive window panels in the middle of each shift over a 15-day period and recording the dimension of the cut.