In a Stratified Sample

question 33

Multiple Choice

In a stratified sample,

• A) everyone has the same chance of being selected for the sample.
• B) a variable is the basis on which a group of people are randomly selected.
• C) a sample is chosen from a selected group of people.
• D) characteristics of the total population are represented.

---

Definitions:

Oropharyngeal Suctioning

The process of removing saliva, blood, or other secretions from the upper part of the throat to prevent aspiration.

Nasal Cannula

A device used to deliver supplemental oxygen or airflow to a patient in need of respiratory help, consisting of a lightweight tube which on one end splits into two prongs that are placed in the nostrils and from which a mixture of air and oxygen flows.

Productive Cough

A cough that expels mucus or phlegm from the respiratory tract, indicating the clearing of airways.

Ventilator-Associated Pneumonia

A type of lung infection that occurs in people who are on mechanical ventilation breathing machines in hospitals, posing significant risks.