A.
The drug definitely increases the biomarker.
✓
B.
The drug definitely decreases the biomarker.
✓
C.
The confidence interval includes zero, suggesting no statistically significant effect of the drug on the biomarker.
✓
D.
The drug is highly effective.
✓
A.
Descriptive statistics.
✓
C.
Inferential statistics.
✓
A.
Independent samples t-test.
✓
A.
Small sample size makes the finding more reliable.
✓
B.
Small sample size can lead to unstable estimates and findings that may not replicate in larger studies.
✓
C.
The p-value is always accurate regardless of sample size.
✓
D.
The study had high power.
✓
A.
The null hypothesis assumes the new drug is inferior by a pre-specified margin.
✓
B.
The null hypothesis assumes the new drug is superior.
✓
C.
The significance level is ignored.
✓
D.
Non-inferiority trials do not use hypothesis testing.
✓
