Mathematics · Statistics
Which of the following statements are correct? 1. Z-test is generally used for large samples (n ≥ 30). 2. t-test is used for small samples when population variance is unknown. 3. Chi-square test is used for testing independence or association between categorical variables.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11 and 3 only
- 21, 2 and 3✓
- 32 and 3 only
- 41 and 2 only
Correct answer
1, 2 and 3
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