To Determine Whether Four Population Means Are Equal,a Sample from Each

question 15

Multiple Choice

To determine whether four population means are equal,a sample from each population was selected at random. Using the Kruskal-Wallis test,H was computed to be 2.09. What is our decision at the 0.05 level of risk?

• A)Fail to reject the null hypothesis because 0.05 < 2.09.
• B)Fail to reject the null hypothesis because 2.09 < 7.815.
• C)Reject the null hypothesis because 7.815 > 2.09.
• D)Reject the null hypothesis because 2.09 > critical value of 1.96.

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Definitions:

Psychologists

Professionals in the field of psychology who study mental processes and behavior, and may provide counseling or therapy.

Range of Phenomena

The breadth or scope of occurrences, situations, or conditions that can be observed or experienced within a particular domain or context.

Descriptive Statistics

Statistical methods used to summarize and describe the main features of a collection of data.

Summarize

To provide a brief statement or account of the main points or highlights of a piece of writing, a discussion, or an event.