Suppose the Wilcoxon Signed-Rank Test Was Used on Seven Pairs

question 7

Multiple Choice

Suppose the Wilcoxon signed-rank test was used on seven pairs of data. If the calculated test statistic for a two-tailed test was found to be 5, at α = 0.05 we can conclude that

• A) The null hypothesis should not be rejected and that the groups are all the same.
• B) The null hypothesis should be rejected and that the groups are not all the same.
• C) The null hypothesis should not be rejected and that the groups are not all the same.
• D) The null hypothesis should be rejected and that the groups are all the same.
• E) The groups are different.

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Definitions:

Perception

The process by which individuals organize and interpret their sensory impressions in order to give meaning to their environment.

Primacy Effect

A perception problem through which an individual assesses a person quickly on the basis of the first information encountered.

Recency Effect

A perception problem through which we use the most recent information available to assess a person.

Recency Effect

A cognitive bias in which the most recently presented information or experiences are remembered more clearly than earlier ones.