$$

A production process has a Process Capability Ratio $($Cp$)$ of $1\mathrm{.}67.$

Is this Cp value sufficient to meet Lean Six Sigma quality standards?

Question $7$ options:

Yes, because any Cp above $1\mathrm{.}5$ is acceptable for Six Sigma quality.

No$,$ because Lean Six Sigma requires a Cp of $2\mathrm{.}0$ or higher.

Yes, because a Cp of $1\mathrm{.}67$ meets Lean Six Sigma quality standards.

No$,$ because Lean Six Sigma requires a Cp of $1\mathrm{.}5$ or higher.