A Treatment is any condition applied to...
Observations are employed before the others by....
Assigning by chance is randomization...
We cannot, the proper controls were not made.
After generating a hypothesis, a scientist...
If your hypothesis is rejected, you may still have learned something...
The purpose of experimentation phase is to...gather evidence to support or reject a hypothesis.
Have two groups of people wash with either antibacterial or regular soap, with neither the researchers nor the groups knowing which type of soap is being used, and compare.
Choice a and b are correct.