Suppose a Research Uses the Mann-Whitney U Test to Determine

question 98

Multiple Choice

Suppose a research uses the Mann-Whitney U test to determine if there is a difference in the volume of text messages sent by a high school student living in a rural area versus an urban area during the month of December.Eight rural high school students and 9 urban high school students were included in the study.If, among all 17, the sum of the ranks W₂ produced from the urban high school is 88, the U₂ test statistic is _____________

• A)29
• B)45
• C)90
• D)43
• E)20

---

Definitions:

Unconditioned Stimulus (US)

In classical conditioning, a stimulus that unconditionally—naturally and automatically—triggers a response.

Conditioned Response (CR)

A learned response to a previously neutral stimulus that, after being repeatedly paired with an unconditioned stimulus, elicits a reaction.

Unconditioned Stimulus (US)

In classical conditioning, a stimulus that instinctively and involuntarily elicits a reaction without any previous learning.

Discrimination

Unjust or prejudicial treatment of different categories of people, often based on race, age, gender, or religion.