TABLE 9-2 a Student Claims That He Can Correctly Identify Whether a Whether

question 135

Multiple Choice

TABLE 9-2
A student claims that he can correctly identify whether a person is a business major or an agriculture major by the way the person dresses. Suppose in actuality that if someone is a business major, he can correctly identify that person as a business major 87% of the time. When a person is an agriculture major, the student will incorrectly identify that person as a business major 16% of the time. Presented with one person and asked to identify the major of this person (who is either a business or an agriculture major) , he considers this to be a hypothesis test with the null hypothesis being that the person is a business major and the alternative that the person is an agriculture major.
-Referring to Table 9-2, what is the "actual confidence coefficient"?

• A) 0.13
• B) 0.16
• C) 0.84
• D) 0.87

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Definitions:

Army Beta

Nonverbal counterpart to the Army Alpha that was used to evaluate the aptitude of illiterate, unschooled, or non-English-speaking recruits.

Yerkes

Refers to Robert M. Yerkes, an American psychologist known for his work in intelligence testing and comparative psychology.

Federal Law

Legislation enacted by the national government of a country, which applies to all its citizens and entities, superseding state or local laws in case of conflict.

Personality Tests

Assessments designed to measure and evaluate an individual's character traits, behaviors, and emotional patterns.