The principal of a middle school claims that test scores of

The principal of a middle school claims that 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 variation described by = 14.7. 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.

Solution

We conclude that test scores of the seventh-graders at his school vary significantly less than the test scores of the seventh-graders at a neighboring school.