Professor Hoffman Was Interested in the Effects of Vitamin B12

question 15

Multiple Choice

Professor Hoffman was interested in the effects of vitamin B12 deprivation on maze learning in rats. One group is given a vitamin B12 injection. The comparison group is
Given a placebo injection. He finds that the vitamin group learns the maze faster. In this study, the independent variable is ________ and the dependent variable is _.

• A) speed of learning; type of injection
• B) vitamin B12; placebo
• C) speed of learning; concentration of sugar
• D) type of injection; number of errors
• E) type of injection; speed of learning

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Definitions:

Accounting Equation

Assets equal liabilities plus owners’ equity.

Net Income

The total profit (or loss) after all expenses, including taxes, have been deducted from revenue; also called net earnings.