CQE Leak Questions

The correct test statistic for a paired-sample t test is used when comparing the means of two related groups. The formula for the paired-sample t test is:

t=dˉsd/nt = \frac{\bar{d}}{s_d / \sqrt{n}}t=sd​/n​dˉ​

Where:

dˉ\bar{d}dˉ is the mean of the differences between the paired observations.

sds_dsd​ is the standard deviation of the differences.

nnn is the number of pairs.

The client, or the party commissioning the audit, has the primary responsibility for defining the purpose and scope of the audit.

The client sets the objectives, scope, and criteria to ensure the audit meets their specific needs and requirements.

The audit manager and auditor may assist in refining the scope and purpose but the initial determination lies with the client.

References: The ASQ "Auditing Handbook" and ISO 19011:2018 guidelines on auditing management systems outline the client's role in defining audit scope and objectives.

Implementing a supplier rating system provides multiple benefits:

Reduction in Supplier's Process Variability:

Focuses on improving consistency but is not the primary benefit.

Identify Competencies and Weaknesses:

Allows the organization to assess and benchmark suppliers' performance in different areas, identifying strengths and areas for improvement.

Helps in making informed decisions about supplier selection and development.

Measure Timeliness and Delivery:

Important aspect of supplier performance but not the primary benefit.

Improvement in Supplier Audit:

Enhanced audits through better data but secondary to understanding competencies and weaknesses.

Identifying competencies and weaknesses enables better supplier management and development, making it the primary benefit.

References: Supply chain management literature and supplier evaluation methodologies.

A material review board (MRB) gets its authority to act from executive management. The MRB is typically composed of representatives from various departments, including engineering, quality, and production, and is responsible for reviewing and making decisions on non-conforming materials. The authority given by executive management ensures that the MRB has the power to enforce quality standards and make necessary decisions.