The Lack of Potassium in Lunar Rocks Supported the Impact

question 12

Multiple Choice

The lack of potassium in lunar rocks supported the impact hypothesis because:

• A) potassium is rare on asteroids.
• B) it indicates the rocks were once at very high temperature.
• C) potassium only exists in Earth's core.
• D) any pre-existing potassium on the moon would have decayed during impact.

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Definitions:

Confidence Interval

A range of values, derived from sample statistics, that are believed to contain the value of an unknown population parameter at a certain confidence level.

Sample Size

The number of observations or replicates included in a statistical sample.

Confidence Level

The probability that the value of a parameter falls within a specified range of values.

Population Standard Deviation

A measure of the dispersion or spread of all the data points in a population dataset.