What Is a Main Hazard of This Type of Volcano

question 38

Multiple Choice

What is a main hazard of this type of volcano?

• A) hot molten fragments thrown a short distance from the volcano
• B) viscous lava that moves too fast for people to outrun
• C) destruction by moderately fluid lava flows that can flow far from the volcano
• D) relatively small pyroclastic eruptions caused by localized explosions or collapse

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Definitions:

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it defines the boundary for the region of rejection.

Power

The probability that a statistical test will correctly reject a false null hypothesis, effectively detecting an actual effect.

Type II Error

The mistake of failing to reject a false null hypothesis, also known as a "false negative" finding.

Dependent-Samples T-Test

A statistical test used to compare the means of two related groups, indicating if any difference between them is statistically significant.