An experiment is a carefully controlled study in which the researcher manipulates a proposed cause and observes any corresponding change in the proposed effect.

Question

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This statement is true. In an experiment, the researcher intentionally manipulates a variable or treatment and observes the resulting change in another variable, called the outcome or effect. The purpose is to identify a cause-and-effect relationship between the manipulated variable and the outcome. The study is carefully designed to control for extraneous variables that might interfere with the interpretation of the results.

An Experiment Is a Carefully Controlled Study in Which the Researcher