When We Fail to Reject the Null Hypothesis,we

question 21

Multiple Choice

When we fail to reject the null hypothesis,we

• A)claim that a significant difference exists between groups.
• B)have committed a Type I error.
• C)have obtained a t-value greater than our critical t-value.
• D)conclude that sampling variability is responsible for our obtained difference.
• E)have committed a Type II error.

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Definitions:

Parametric Methods

Statistical methods that assume the data samples have a specific distribution.

Rigid Requirements

Strict, inflexible criteria or conditions that must be met or adhered to.

Right-tailed Wilcoxon Rank Sum Test

A non-parametric statistical test used to compare two independent groups to determine if one group's median is significantly greater than the other group's median.

Test Statistic

A value derived from sample data used in a hypothesis test to determine whether to reject the null hypothesis.