Mathematics · Statistics and Research
Given below are two statements: Statement I: In a two-tailed test, 2.5% of the area of the normal curve falls to the right of 1.96 standard deviations above the mean and 2.5% to the left of 1.96 standard deviations below the mean. Statement II: In a one-tailed test, for testing the difference between large sample means, a z-score of 1.64 is taken as the yardstick at the 5% level of significance. In light of the above statements, choose the correct answer from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Statement I is incorrect but Statement II is correct
- 2Statement I is correct but Statement II is incorrect
- 3Both Statement I and Statement II are incorrect
- 4Both Statement I and Statement II are correct✓
Correct answer
Both Statement I and Statement II are correct
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