A Researcher Conducts a Hypothesis Test to Evaluate the Effect

question 84

Multiple Choice

A researcher conducts a hypothesis test to evaluate the effect of a treatment that is expected to increase scores.The hypothesis test produces a z-score of z = 2.27.If the researcher is using a one-tailed test,what is the correct statistical decision?

• A)Reject the null hypothesis with α = .05 but not with α = .01.
• B)Reject the null hypothesis with either α = .05 or α = .01.
• C)Fail to reject the null hypothesis with either α = .05 or α = .01.
• D)Cannot answer without additional information

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Definitions:

Efficiency Evaluations

Assessments focused on examining how well an entity uses its resources to achieve goals with the least waste of time and effort.

Effectiveness Evaluations

Assessments that measure how well a program, project, or intervention achieves its intended outcomes and objectives.

Single System

An isolated or stand-alone system, often referred to in contexts where a system operates independently of others.

Single-System Methods

Research methods focused on evaluating interventions or changes within a single subject or system over time.