For a Lower Tail Hypothesis Test with a Sample Size

question 38

Multiple Choice

For a lower tail hypothesis test with a sample size of 13 and a .10 level of significance, the critical value of the test statistic t is

• A) -1.356.
• B) -1.350.
• C) -1.782
• D) -1.771.

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Definitions:

Quartzite

A very hard rock consisting chiefly of quartz grains joined by secondary silica that causes the rock to break across rather than around the grains; formed by metamorphism or by silica cementation of a quartz sandstone.

Slate

A compact, fine-grained, low-grade metamorphic rock that possesses slaty cleavage.

Hornfels

Hornfels is a metamorphic rock formed by the contact between mudstone or other clay-rich rock and a hot igneous body, characterized by its hardness and fine grain.

Greenstone

Metamorphosed basalt or other mafic volcanic rock, typically found in ancient geological formations.