A researcher randomly divides 50 mice into two groups, feeds one a high-fat diet and the other a standard diet, and measures weight gain after 8 weeks.
Which best describes this study?
- A
A blocked experiment
- Bcheck_circle
A completely randomized experiment
- C
An observational study
- D
A matched-pairs experiment
Explanation
Treatments are imposed and randomly assigned with no blocking - a completely randomized experiment.