Exhibit 7-4: a Group of Researchers Has Developed a Method

question 109

Multiple Choice

Exhibit 7-4: A group of researchers has developed a method that they hypothesize will improve physics test scores.They randomly selected nine students to participate in their study.The nine students were administered an ACT test, trained in the new method, and then administered an alternate form of the ACT test.The following data are their scores:
$\begin{array}{lll}\text {Subject } & {\text {Test 1 }}{} & \text {Test 2 } \\ 1 & 20 & 19 \\ 2 & 20 & 20 \\ 3 & 24 & 21 \\ 4 & 24 & 24 \\ 5 & 24 & 22 \\ 6 & 17 & 15 \\ 7 & 18 & 15 \\ 8 & 18 & 16 \\ 9 & 20& 18\end{array}$
-Refer to Exhibit 7-4.What is the observed value for the chosen statistic?

• A) .94
• B) 1.172
• C) 4.603
• D) None of these are true.

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Definitions:

Active Voice

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Reading

The process of interpreting and understanding written or printed material.

Manufactured

Produced or made using machinery in a systematic process, typically on a large scale in factories.

Concrete Words

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