Instruction 9-1 a Student Claims That She Can Correctly Identify Whether a Whether

question 67

Multiple Choice

Instruction 9-1
A student claims that she can correctly identify whether a person is studying a business or science major by the way the person dresses. Suppose in actuality that if someone is studying a business major, she can correctly identify that person as a business student 87% of the time. When a person is studying a science major, the student will incorrectly identify that person as a business student 16% of the time. Presented with one person and asked to identify the area of study of this person (who is studying either a business or science major) , she considers this to be a hypothesis test with the null hypothesis being that the person is a business student and the alternative that the person is a science student.
-Referring to Instruction 9-1,what is the power of the test?

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

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Definitions:

Efficacy

The ability to produce a desired or intended result, often used in contexts relating to psychology, medicine, and organizational performance.

Motivation

The process that initiates, guides, and maintains goal-oriented behaviors.

Common Core

A set of educational standards in mathematics and English language arts/literacy (ELA) that outline what students should know and be able to do at each grade level.

State Standards

Benchmarks established by educational authorities to specify the knowledge and skills that students should acquire at each grade level.