A Researcher Is Conducting a Matched?pairs Study

question 17

Multiple Choice

A researcher is conducting a matched?pairs study. She gathers data on each pair in the study resulting in: Assume that the data are normally distributed in the population. The level of significance is selected to be 0.10. If the alternative hypothesis is that the average difference is greater than zero, the null hypothesis would be rejected if the observed value of t is ___.

• A) greater than 1.533
• B) less than -1.533
• C) greater than 2.132
• D) less than -2.132
• E) equal to 2.333

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Definitions:

Contingency

Describes a future event or circumstance that is possible but cannot be predicted with certainty.

Operant Conditioning

A learning process in which the strength of a behavior is modified by its consequences, such as reward or punishment.

Extinction

Within the field of psychology, a conditioned response gradually fades and ultimately vanishes.

Unconditioned Stimulus

Within the framework of classical conditioning, a stimulus inherently and spontaneously elicits a reaction without the necessity of prior learning.