In a Wilcoxon Signed-Rank Test, the Test Statistic Is Calculated

question 23

Multiple Choice

In a Wilcoxon signed-rank test, the test statistic is calculated as T = 75. If there are n = 15 observations for which the difference is not 0, and a two-tailed test is performed at the 5% significance level, what is an appropriate conclusion?

• A) Reject the null hypothesis.
• B) Don't reject the null hypothesis.
• C) The test results are inconclusive.
• D) Perform a parametric test.

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Definitions:

Fixed Costs

Expenses that remain constant regardless of production or sales volume in the short term, like lease payments or wages.

Relevant Range

The range of activity within which the assumptions about cost behavior hold true for a specific operation or business.

Merchandising Company

A company that purchases goods in a finished state for the purpose of reselling them without further manufacturing.

Cost Structure

Cost structure denotes the various types of expenses a business incurs and is typically categorized into fixed and variable costs, influencing pricing and profitability.