Solve FE-style Quality questions and learn the reasoning behind each answer through interactive engineering cases.
A 5% defective process did not imply a 95% lot-acceptance probability. Under an n=20, c=1 plan, acceptance required observing zero or one defective item.
Solve This Question โ The full solution unlocks after the investigation.Choose a question and solve it before reading the final engineering verdict.
A 5% defective process did not imply a 95% lot-acceptance probability. Under an n=20, c=1 plan, acceptance required observing zero or one defective item.
Quality loss did not grow linearly with deviation from target. Under the Taguchi quadratic model, a 3-unit deviation caused a $45 loss.
The process spread fit comfortably inside the specification width, but the mean had shifted toward the USL. Cp looked strong while Cpk exposed the centering problem.
The individual-process spread looked wide enough to contain 53.5, but an xฬ chart uses the standard error of the sample mean. The upper control limit was 53.0.
Practice the calculations, assumptions, constraints, and failure modes that appear around this topic. Each question here is designed to test whether you can apply the concept when the obvious calculation is not the whole engineering decision.