The Probability of a Large Cascadia Megathrust Earthquake in the Next

question 32

Multiple Choice

The probability of a large Cascadia megathrust earthquake in the next 50 years is ___________.

• A) 1%
• B) 10%
• C) 20%
• D) 50%
• E) 100%

---

Definitions:

False Alarm

An event in which a warning or alert is given, but the anticipated threat or danger does not actually occur.

Signal Detection Task

A psychological test that measures the ability to differentiate between information-bearing patterns (signals) and random patterns that distract from the information (noise).

Hit

In the context of data or searches, a hit refers to a successful match or retrieval of information that corresponds to a specific query.

Difference Threshold

The minimum difference in stimulation that a person can detect 50% of the time, also known as the just noticeable difference (JND).