Discuss ASQ CQA Exam Topic 4 Question 122

An auditor is performing an audit of a drilling machine that produces 100 pieces a day and that is showing improved quality. Which of the following rules should be used for determining the proper sample size for a fixed level of confidence?

AThe moving average should be calculated.

BThe sample size should be decreased as the quality improves.

CThe AQL of the raw material should be used.

DA 10% sample size should be used, regardless of the change in quality.

Suggested Answer: B

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26 comments · newest first

Ling 1 month ago

D seems too rigid. A fixed 10% doesn't consider quality improvements.

Zachary 1 month ago

C makes sense too. AQL helps ensure raw material quality is consistent.

Van 2 months ago

I disagree, A is more appropriate. Moving averages give a better trend analysis.

Chandra 2 months ago

I think B is the best choice. Improved quality means we can reduce the sample size.

Roselle 2 months ago

I lean towards B too. Less risk with better quality, right?

Felicidad 2 months ago

D seems too rigid. A 10% sample doesn't consider quality changes.

Lorrie 2 months ago

I disagree, AQL is crucial. C makes sense for raw materials.

Dewitt 2 months ago

I think B is the best choice. Improved quality means we can reduce the sample size.

Chantay 3 months ago

D seems too rigid. A fixed 10% doesn’t consider quality improvements.

Marcelle 3 months ago

C makes sense too. AQL is crucial for raw material assessment.

Chi 3 months ago

I disagree, A is more relevant. Moving averages help track trends effectively.

Rana 3 months ago

I think B is the best choice. Improved quality means we can reduce the sample size.

Johnetta 3 months ago

Totally agree, AQL makes the most sense here!

Sonia 4 months ago

Moving averages aren't really about sample size, right?

Janae 5 months ago

Wait, why would we use a fixed 10% sample size? That seems off.

Jina 5 months ago

I think the sample size should decrease as quality improves!

Sylvie 5 months ago

AQL of the raw material is key for sample size.

Malissa 6 months ago

Quality improving means we should definitely adjust sample size!

Merilyn 6 months ago

Totally agree, moving average isn't really relevant here.

Melynda 6 months ago

Wait, how can we just assume 10% is always right?

Odelia 6 months ago

I think the sample size should decrease with better quality.

Katina 6 months ago

AQL of the raw material is key for sample size!

Elvera 6 months ago

I recall that moving averages can help in understanding trends, but I’m not clear on how they relate to sample size determination in this context.

Terrilyn 7 months ago

I feel like the 10% rule is a common guideline, but I’m not convinced it’s the best approach if quality is changing.

Sherita 7 months ago

I think we practiced a question similar to this where we had to decide if the AQL was relevant. I wonder if it applies here too.

Judy 7 months ago

I remember discussing how sample size can be influenced by quality improvements, but I'm not sure if it should always decrease.

ASQ CQA Exam - Topic 4 Question 122 Discussion