D.
Interquartile range.
✓
B.
Independent samples t-test.
✓
A.
Independent samples t-test.
✓
C.
Mann-Whitney U test (or Wilcoxon rank-sum test).
✓
B.
Interquartile range.
✓
A.
High power is not necessary.
✓
B.
High statistical power (e.g., 80% or 90%) is critically needed.
✓
C.
The power should be as low as possible.
✓
D.
Power is only relevant for large differences.
✓
A.
Binomial distribution.
✓
B.
Poisson distribution.
✓
C.
Normal distribution.
✓
D.
Uniform distribution.
✓
C.
Pie chart or bar chart.
✓
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.
✓
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