Dr. Popapil is interested in whether or not a new drug will alter the levels of serotonin in
the brains of rats. One group of rats is given the drug while a control group is not given the drug.
After waiting for the drug to take effect, Dr. Popapil measures the level of serotonin for rats in
both groups.

Question

Answer

Independent variable: Dr. Popapil & Dependent Variable: drugs.

Answer

Independent variable: rats & Dependent Variable: levels of serotonin.

Answer

Independent variable: rats & Dependent Variable: control group.

Answer

Independent variable: new drugs & Dependent Variable: levels of serotonin.

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Dr. Popapil is interested in whether or not a new drug will alter the levels of ...

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