The specifications for a manifold gasket that installs between two engine parts calls for a thickness of 2.500 mm .020 mm. The standard deviation of the process is estimated to be 0.004 mm . The process is currently operating at a mean thickness of 2.50 mm . ( a ) What are the upper and lower specification limits for this product ? ( b ) What is the Cp for this process ? ( c ) About what percent of all units of this gasket will meet specifications ? Does this meet the technical definition of Six Sigma ?