Solve the Equation

question 14

Multiple Choice

Solve the equation.

---

Definitions:

Double-Masked Design

Experimental procedure in which neither the participant nor the experimenter knows whether the participant has received the experimental treatment or a placebo.

Manipulated

Being controlled or influenced in a clever and often unfair or selfish way.

Experiment

A research procedure in which a variable is manipulated and the effect of the manipulation is observed.

Observational Study

A type of research in which the investigator observes and records behavior or outcomes without manipulating the study environment or subjects.