Question

An inactive substance or treatment that cannot be distinguished from a real, active substance or treatment is called a ____.

Answer 1

Placebo

Step-by-step explanation:

A placebo group is "an inactive substance or treatment that cannot be distinguished from a real, active substance or treatment"

Fro any experiment, "subjects respond differently after they receive a treatment, even if the treatment is neutral". When we have a neutral treatment that has no effect on the dependent variable is called a "placebo".

And is important to used when we want to find significant effects on any treatment in a population selected. And the common procedure that use a placebo group is the ANOVA of 1 or 2 ways.