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Today, Mars has virtually no magnetic field.
Unshaded Area
Represents the portion of a graph or figure that is not marked or covered by a darker color or pattern.
Critical Value
A point on the scale of a test statistic that represents the threshold of significance, beyond which a null hypothesis is rejected.
Population Parameter
A numerical value that summarizes or describes an aspect of a population.
Null Hypothesis
A default statement that there is no difference or effect, used as a starting point for statistical hypothesis testing.
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