An Earthquake Always Begins at

question 13

Multiple Choice

An earthquake always begins at

• A) the Moho.
• B) a focus.
• C) the base of the Earth's crust.
• D) the top of the Earth's mantle.

---

Definitions:

Level of Significance

The threshold probability used in hypothesis testing to determine whether to reject the null hypothesis.

Probability

A measure of the likelihood of occurrence of an event, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

Z Statistic

A statistic that tells us how many standard deviations an element is from the mean. It is used in hypothesis testing.

Probability

A measure quantifying the likelihood that events will occur, ranging from 0 (impossibility) to 1 (certainty).