A Mann-Whitney U Test Was Performed to Determine If There

question 12

Multiple Choice

A Mann-Whitney U test was performed to determine if there were differences in the cost of tuition at a Texas state university versus an Oklahoma state university.The total cost, including room, board, and books for 24 freshmen attending a Texas university were computed and compared to the total cost for 20 Oklahoma state university students.The U statistic was calculated to be 38.78 based on the sample sizes of 24 and 20.What is the z value for this test?

• A)0.133
• B)-4.74
• C)240
• D)42.43
• E)8.75

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Definitions:

Valid Syllogism

A form of deductive reasoning where, from two given premises, a logically inevitable conclusion is derived.

I Proposition

In the traditional square of opposition, an I proposition is a form of categorical proposition which affirms some, but not necessarily all, members of a class are included in another class.

Validity Rules

Principles or guidelines used to determine the logical correctness of an argument, ensuring that if the premises are true, the conclusion must also be true.

Categorical Syllogisms

A form of reasoning where two premises lead logically to a conclusion, with each statement dealing with categories of things.