Solve the Problem. -The Principal of a Middle School Claims That the Test

question 21

Multiple Choice

Solve the problem.
-The principal of a middle school claims that the test scores of the seventh-graders at his school vary less than the test scores of the seventh-graders at a neighboring school, which have a standard deviation of 14.6.
Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.

• A)There is sufficient sample evidence to support the claim that the standard deviation is greater than 14.6.
• B)There is sufficient sample evidence to support the claim that the standard deviation is less than 14.6.
• C)There is not sufficient sample evidence to support the claim that the standard deviation is less than 14.6.
• D)There is not sufficient sample evidence to support the claim that the standard deviation is greater than 14.6.

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Definitions:

Theory Of Mind

The ability to attribute mental states—beliefs, intents, desires, emotions—to oneself and others, and to understand that others have beliefs, desires, and intentions that are different from one's own.

Conservation

The principle in cognitive development where a child recognizes that quantity remains the same despite changes in its shape or form.

Short, Wide Glass

A container for liquids that is notably lower in height but broader in width, affecting the perception of content volume.

Soda

A sweet, carbonated beverage, often flavored and containing caffeine and other additives.