All Visitors to the CNN Website Are Invited to Take

question 46

Multiple Choice

All visitors to the CNN website are invited to take part in the daily poll.Is the resulting sample likely to be biased?

• A) No, this will result in a simple random sample.
• B) No, although this sample would not be random, it would definitely be representative of the population.
• C) Yes, the sample is likely to suffer from nonresponse and self-selection bias.
• D) More information is needed to answer the question.

---

Definitions:

Physics and Engineering

Disciplines focused on understanding the fundamental principles governing the physical world and applying this knowledge to design and construct systems and structures.

Naturalists

Scientists who study and work within the various branches of natural history, focusing on the observation of natural objects, organisms, and phenomena.

Within-host Selection

The process of natural selection occurring within an individual host, shaping the genetic makeup of microbial or parasitic populations.

Virulence

The degree of pathogenicity or ability of a microbe to cause disease in its host, often linked to the severity and speed of the disease it causes.