A Researcher Is Testing a Hypothesis of a Single Mean $\alpha$

question 74

Multiple Choice

A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 and a two?tailed test is +1.96.The observed z value from sample data is 2.85.The decision made by the researcher based on this information is to _____ the null hypothesis.

• A) reject
• B) fail to reject
• C) redefine
• D) change the alternate hypothesis into
• E) restate

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Definitions:

Consensus

General agreement among a group of people or the general opinion of a group.

Distinctiveness

Refers to how much an object or person stands out as compared to others in the same category or environment.

Consistency

The quality of achieving a level of performance which does not vary greatly in quality over time.

Frequency

In general terms, the rate at which something occurs over a particular period of time or in a given sample.