The Significance Level for a Wilcoxon Signed Rank Sum Test

question 5

Short Answer

The significance level for a Wilcoxon signed rank sum test is 0.05. The alternative hypothesis is stated as: The location of population 1 is to the left of the location of population 2. The appropriate critical value for a sample of size 20 (that is, the number of nonzero differences) is: $\begin{array} { | l | l | } \hline \text { A. } & 158 . \\\hline \text { B. } & 150 . \\\hline \text { C. } & 60 \\\hline \text { D. } & 52 \\\hline\end{array}$

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Definitions:

Fixed Production Costs

Expenses that do not fluctuate with the level of production output, such as depreciation on factory buildings and salaries of certain managers.

Depreciation

An accounting method of allocating the cost of a tangible asset over its useful life.

Period Cost

Costs that are expensed in the period they are incurred and are not directly tied to production activity.

Indirect Costs

Costs that cannot be directly linked to the production or sale of a specific product or service, such as administration, rent, and utilities.