ASQ Certified Six Sigma Black Belt (CSSBB) Exam

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A project team is investigating the relationship between the type of raw material supplier (four suppliers, a categorical variable) and the occurrence of a specific defect (present/absent, a categorical variable). Which statistical test should be used to determine if there is a significant association between the supplier and the defect rate?

2-sample t-test Chi-Square Test of Independence Mood's Median Test Simple Linear Regression

Correct Answer:

Chi-Square Test of Independence

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