For a Two-Tailed Hypothesis Test with a Significance Alpha Level $\pm$

question 20

Multiple Choice

For a two-tailed hypothesis test with a significance alpha level of .05, what is the critical z-value?

• A) \(\pm\) 3.08
• B) \(\pm\) 1.96
• C) +1.95
• D) -1.96

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Definitions:

Continental Crust

The thick part of the Earth's crust that forms the continents and continental shelves, composed mostly of granite.

Decompression Melting

The process where melting occurs in upwelling mantle material as it experiences lower pressures without a corresponding decrease in temperature, leading to magma formation.

Mantle-Derived Magmas

Magma that originates from the melting of the Earth's mantle, leading to volcanic activity.

Continental Crust

The layer of igneous, sedimentary, and metamorphic rocks that forms the continents and continental shelves, characterized by its thickness and composition distinct from oceanic crust.