Abasic experiment involves a minimum of

A basic experiment involves a minimum of two participant groups.

To add, a procedure carried out to support, refute, or validate a hypothesis is called an experiment. By demonstrating what outcome happens when a specific factor is changed, it supplies insight into cause and effect.

the framers of the constitution insisted that federal judges be nominated instead of elected due to their desire to have judges above the shifting whims of the masses.

the hope, whether achieved or not, was that federal judges would only be beholden to the law and that by not having judges be elected, they would be protected if that law dictated an outcome that ran counter to popular opinion.