The Department of Transportation Would Like to Test the Hypothesis $$z \bar { x }$$

question 18

Multiple Choice

The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set ? = 0.05. The test statistic for this hypothesis test would be .

• A)\[z \bar { x }\] = - 2.29
• B)\[z \bar { x }\]= - 1.04
• C)\[z \bar { x }\]= - 2.11
• D)\[z \bar { x }\] = 1.90

---

Definitions:

Limited Liability

A legal structure for businesses where owners' personal assets are protected from the company's debts and liabilities.

Objectivity

The principle of being unbiased and based on observable phenomena, ensuring that personal feelings or opinions do not affect data collection and interpretation.

Financial Information

Data related to the financial status of an entity, including assets, liabilities, revenues, and expenses, which is used for analysis and decision-making.

Unbiased Evidence

Information or data that is objective, impartial, and not influenced by personal feelings or opinions, used in making decisions or conclusions.