Two Independent Sets of Data Are Collected, the First with 15

question 40

Multiple Choice

Two independent sets of data are collected, the first with 15 subjects and the second with 26 subjects. Mr. X is a subject in the first data set and is associated with a value of 66.
In the first set, 3 values are ranked behind 66 and 11 values are ranked ahead of it (with
Mr) X being the other data value) . In the second set, 9 values are ranked behind 66 and
16 values are ranked ahead of it. What is Mr. X's rank in a Wilcoxon rank sum test?

• A) 28
• B) 27
• C) 12
• D) 11

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Definitions:

Sensory Adaptation

The process by which sensory receptors become less sensitive to constant or unchanging stimuli over time, allowing individuals to focus on changes in their environment.

Absolute Threshold

The lowest level of stimulation that an organism can detect at least 50% of the time.

Attention

The process of sorting through sensations and selecting some of them for further processing.

Difference Threshold

The smallest difference in stimulus intensity required to detect a difference between two stimuli, also known as the just noticeable difference (JND).