The specifications for a manifold gasket that installs between two engine parts calls for a thickness of $2\mathrm{.}500$ mm $\backslash$pm $\mathrm{.}020$ mm$.$ The standard deviation of the process is estimated to be $0\mathrm{.}004$ mm$.$ The process is currently operating at a mean thickness of $2\mathrm{.}51$ mm$.$

a$.$ What are the upper and lower specification limits for this product?

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b$.$ What is the Cp for this process?

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c$.$ What is the Cpk for this process

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c$.$ Does this meet the technical definition of Six Sigma based on evaluating both Cp and Cpk