Problem
Suppose that the design engineering team set the specifications for the length of a stamped sheet-metal part at 10 inches (T) with acceptable tolerances of ± .05 inches (USL and LSL). The average length of the products produced by the actual stamping process at your supplier is 9.995 inches (μ) with a standard deviation of .0.005 inches (σ). Is the Supplier's process capable of consistently producing high-quality parts (i.e., within specs)?