The Principal of a Middle School Claims That Annual Incomes $\sigma = \$ 13,700$

question 32

Multiple Choice

The principal of a middle school claims that annual incomes of the families of the seventh-graders at his school vary more than the annual incomes of the families of the seventh-graders at a neighboring school, which have variation described by $\sigma = \$ 13,700$ . Assume that a hypothesis test of the claim has
Been conducted and that the conclusion of the test was to reject the null hypothesis. Identify the population to which the results of the test apply.

• A) The current seventh graders at the principal's school
• B) Seventh graders' families at the school with a standard deviation of $13,700
• C) All of the families of the class of seventh graders at the principal's school
• D) All seventh graders' families

---

Definitions:

IV Infiltrated

A condition where fluids or medications that are being administered intravenously leak out of the vein into the surrounding tissue.

Edema

Swelling caused by excess fluid trapped in the body's tissues, often affecting the legs, feet, or arms, and can result from various medical conditions.

Discolored Skin

A change in skin color, which may be a sign of injury, illness, or other medical conditions.

Sodium

A chemical element, symbol Na, that is a highly reactive metal and an essential component of animal and human physiology, particularly in the regulation of fluids and blood pressure.