Refer to the MegaStat/Excel Output for the Wilcoxon Signed Ranks

question 9

Multiple Choice

Refer to the MegaStat/Excel output for the Wilcoxon signed ranks test given in the table below. At a significance level of .01, which one of the following rejection point conditions is correct regarding the null hypothesis, H₀: D₁ and D₂ are identical probability distributions, and the alternative hypothesis of H_a: D₁ is shifted to the left or right of D₂.

• A) We reject H₀ and conclude there is not sufficient evidence that the probability distribution of population 1 is shifted to the left of the probability distribution of population 2.
• B) We cannot reject H₀ and conclude there is not sufficient evidence that the probability distribution of population 1 is shifted to the left or right of the probability distribution of population 2.
• C) We reject H₀ and conclude there is very strong evidence that the probability distribution of population 1 is shifted to the left of the probability distribution of population 2.
• D) We do not reject H₀ and conclude there is very strong evidence that the probability distribution of population 1 is shifted to the left or to the right of the probability distribution of population 2.
• E) We do not reject H₀ and conclude there is very strong evidence that the probability distribution of population 1 is identical to the probability distribution of population 2.

---

Definitions:

Lumbar Vein

A vein that drains the posterior abdominal wall and the spinal cord in the lumbar region.

Popliteal Vein

A vein located at the back of the knee that helps drain deoxygenated blood from the lower leg back to the heart.

Foot

The lower extremity of the leg below the ankle, on which a person stands or walks.

Calf Region

The posterior part of the lower leg, made up of the gastrocnemius and soleus muscles.