In a Wilcoxon Signed Rank Sum Test, the Test Statistic $D \neq 0$

question 75

Short Answer

In a Wilcoxon signed rank sum test, the test statistic is calculated as T = 75. If there are n = 15 observations for which $D \neq 0$ , and a two-tail test is performed at the 5% significance level, then: $\begin{array}{|l|l|}\hline \text { A. } & \text {we reject the null hypothesis. } \\\hline \text { B. } & \text {we don't reject the null hypothesis. } \\\hline \text { C. } & \text { the test results are inconclusive.} \\\hline \text { D. } & \text { we perform a parametric test.} \\\hline\end{array}$

---

Definitions:

Pleasure

A feeling of happiness, enjoyment, or satisfaction derived from experiences that are enjoyable or gratifying.

Withdrawal Distress

The physical and emotional symptoms experienced after discontinuing the use of an addictive substance.

Heroin Addicts

Individuals who suffer from addiction to heroin, a highly addictive opioid drug, often facing significant physical, psychological, and social consequences.

Euphoria

A feeling or state of intense excitement and happiness.