A Researcher Is Conducting an Experiment to Evaluate a Treatment $\alpha$

question 11

Multiple Choice

A researcher is conducting an experiment to evaluate a treatment that is expected to increase the scores for individuals in a population.If the researcher uses a one-tailed test with $\alpha$ = .01, then which of the following correctly identifies the critical region?

• A)z > 2.33
• B)z > 2.58
• C)z < 2.33
• D)z < 2.58

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Definitions:

Halite

Also known as rock salt, a mineral form of sodium chloride (NaCl) that often occurs in evaporite deposits.

Crystal

A solid material whose atoms are arranged in highly ordered, repeating patterns extending in all three spatial dimensions.

Cleavage

The tendency of a mineral to break along flat planar surfaces as determined by the mineral’s crystal structure, often enhancing its gem quality.

Atoms

The basic units of matter consisting of a nucleus surrounded by electrons, making up all chemical elements.