A Cell Phone Company Wants to Determine If the Use

question 28

True/False

A cell phone company wants to determine if the use of text messaging is independent of age. The following data has been collected from a random sample of customers. To conduct a test of independence, the difference expected value for the "40 and over and regularly use text messaging" cell is just over 43 people.

---

Definitions:

Biological Community

A group of interacting species living together in the same habitat, forming a complex network of relationships.

Abiotic Environment

The inanimate chemical and physical components of the environment that influence living beings and ecosystem operations.

Habitat

The natural environment in which a species or population lives and grows, providing the necessary conditions for survival.

Species' Ecological Role

The unique function or position an organism or species serves in its ecosystem, influencing its survival and the diversity of life in that ecosystem.