In a Maze Learning Study, a Researcher Compares the Performance

question 20

Multiple Choice

In a maze learning study, a researcher compares the performance of laboratory-bred rats and wild rats, hoping to find that the wild rats are better. Which of the following is true?

• A)the null hypothesis is that wild rats will learn faster than lab rats
• B)a Type II error would be to find a difference in the study when no true difference exists
• C)a Type I error would be to find no difference in the study when a true difference exists
• D)if wild rats really are better, but the researcher fails to reject the null hypothesis, then a Type II error has occurred

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Definitions:

Physical Activity

Any bodily movement produced by skeletal muscles that require energy expenditure, contributing to physical fitness and overall health.

Negative Affectivity

A personality characteristic involving the predisposition to experience negative emotions such as anger, anxiety, or depression more frequently or intensely than average.

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Repetitive-motion disorder most frequently associated with keyboarding and the use of optical scanners; occurs when repetitive flexing and extension of the wrist causes the tendons to swell, thus trapping and pinching the median nerve.

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A major nerve in the human body that runs down the arm and forearm, and into the hand, playing a significant role in the control of hand and finger movements.