In an Experiment to Study the Effects of Caffeine on Performance

question 75

Multiple Choice

In an experiment to study the effects of caffeine on performance, an experimenter asked the male students in an introductory psychology class to drink two regular Pepsis before a test and the female students to drink two caffeine-free Pepsis. She then compared performance of the two groups on the test. A confounding variable in this study is:

• A) whether participants had studied for the test.
• B) the type of drink.
• C) the gender of the participants.
• D) the amount of caffeine in the Pepsi.

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Definitions:

Convertible Preferred Stock

A type of preferred stock that gives holders the option to convert their preferred shares into a fixed number of common shares, generally after a predetermined date.

Common Stock

A type of equity security that represents ownership in a corporation, providing voting rights and the potential for dividend payments.

Par Value

the face value of a bond or stock, as stated by the issuing company, not necessarily its market value.

Convertible Preferred Stock

A type of preferred stock that grants the holder the option to convert the stock into a set number of shares of common stock, usually at any time after a predetermined date.