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.

Question

Quizplus · Accepted Answer

Rejecting the null hypothesis in this context means that the evidence supports the claim that the standard deviation of the test scores for the principal's school is less than 14.6, indicating less variability in test scores compared to the neighboring school.

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