A Two-Tailed Hypothesis Test Is Being Used to Evaluate a Treatment

question 83

Multiple Choice

A two-tailed hypothesis test is being used to evaluate a treatment effect with α = .05.If the sample data produce a z-score of z = -2.24,what is the correct decision?

• A)Reject the null hypothesis and conclude that the treatment has no effect
• B)Reject the null hypothesis and conclude that the treatment has an effect
• C)Fail to reject the null hypothesis and conclude that the treatment has no effect
• D)Fail to reject the null hypothesis and conclude that the treatment has an effect

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Definitions:

Demote

In computing, often used to refer to lowering the rank or level of a piece of data or a thread in a hierarchy.

List Item

A single entry or element within a list, which could be part of an ordered (numbered) or unordered (bulleted) list.

Lower Level

A term referring to items, operations, or components that are considered to be at a more basic or foundational tier within a hierarchy.

Calculation

The process of determining a result through mathematical or logical operations, often automated in software applications.