AutoTrader

question 13

Multiple Choice

AutoTrader.com would like to test if a difference exists in the age of three different types of vehicles currently on the road: trucks,cars,and vans.The following data represent the age of a random sample of trucks,cars,and vans. The grand mean for these observations is ________.

• A) 7.2
• B) 8.0
• C) 8.9
• D) 9.3

---

Definitions:

Organ Capacity

The maximum level or potential at which an organ can function, reflecting its health and the ability to carry out its physiological tasks.

For-profit Colleges

are higher education institutions operated by private, profit-seeking businesses, often offering career-oriented courses.

Secure Employment

A situation in which an individual has a stable job and income.

Specific Skills

Abilities or expertise in particular tasks or areas, often requiring specialized knowledge or training.