1. Group B: 50 workers without special juice
Number of stacks of paper produced
Hypothesis is rejected as group with no special juice produced more stacks of paper
- Same test subjects (to control for ability to staple paper)
- Same amount of juice given to each test subject
- More trials (>50 workers)

2. Shower covered in green slime
Spray shower with water
Coconut juice
Appearance of green slime
Hypothesis is rejected as the control and experimental groups produced the same appearance of green slime, so the coconut juice had no effect

3. 10 mice who were not exposed to radiowaves
Ability of mice to push a heavy wood block
Hypothesis is rejected as both groups showed similar abilities to push the wood block away, so radiowaves did not have a significant effect on mice’s strength

4. Test subject sprinkled with original itching powder
Type of itching powder
Duration of itchiness
Hypothesis is supported because experimental group showed a longer duration of itchiness, so the Experimental itching powder produced longer lasting itches. This increase in duration from 30 minutes to 45 minutes is exactly the 50% increase as advertised.

5. Control Group – Family members without using Rogooti
Experimental Group – Family members with using Rogooti
Independent Variable – Using Rogooti
Dependent Variable – Length of hair after a set amount of time
Control Variables – Same family members (to keep physical traits constant)
- Same diet, sleeping habits, and exercise of test subjects between control & experimental trials
- Same time allowed for hair growth