Identify a proper control group and controlled variables, Other Management

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Identify a proper control group and controlled variables

Problem

A woman sees a toothpaste commercial that claims to whiten your teeth better than the leading brand. Having just taken a biology class, she wishes to set up a scientific experiment to test their claim. Help her design a controlled experiment. State a good hypothesis and identify a proper control group, the independent, dependent and controlled variables in the experiment.

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