reduce experiment variability

establish process capability

predict physical test results

prove cycle-time increase

C

The correct answer is C. predict physical test results . In the CSSBB Improve-phase implementation material, simulation is defined as a time-dependent trial of a new product, process, or system , often accomplished through mathematical or computer-based modeling . It is used when an actual demonstration is too difficult, time-consuming, expensive, massive, or dangerous.

That means simulation is used to estimate or predict how a proposed process or product will behave without physically running the full test . This aligns best with predicting physical test results. Simulation does not directly reduce experiment variability, nor is it the primary method for establishing process capability. It also would not be used to “prove cycle-time increase,” especially since improvement projects generally seek cycle-time reduction, not increase. In Six Sigma, simulation is a practical way to explore likely process performance and implementation effects before committing to full-scale testing or rollout. Therefore, the verified answer is C .