Why Is It Difficult for Someone to Witness a Total

question 2

Multiple Choice

Why is it difficult for someone to witness a total solar eclipse in their lifetime?

• A)The Moon's umbra track on Earth's surface is relatively large, making a solar eclipse impossible.
• B)Earth's umbra track on the Moon's surface is relatively small and there are only two times a year when the Moon's orbit and the ecliptic plane intersect to make an eclipse possible.
• C)The Moon's umbra track on Earth's surface is relatively small and there are only two times a year when the Moon's orbit and the ecliptic plane intersect to make an eclipse possible.
• D)Earth's umbra track on the Moon's surface is small and there are only 10 times a year when the Moon's orbit and the ecliptic plane intersect to make an eclipse possible.

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Definitions:

β Value

In statistics, represents the type II error rate, or the probability of failing to reject a false null hypothesis; also used to denote regression coefficients in multiple regression models.

Increasing

Becoming greater or larger in quantity, size, intensity, or degree.

Standard Deviation

A figure that gauges the scatter of data points around the mean value, demonstrating the extent of dispersion.

Test Statistic

A standardized value used in statistical hypothesis testing to determine whether to reject the null hypothesis.