Refer to the MegaStat/Excel Output for the Wilcoxon Rank Sum

question 33

Multiple Choice

Refer to the MegaStat/Excel output for the Wilcoxon rank sum test given in the table below. At a significance level of .05,which one of the following statements is correct regarding the following null hypothesis? H₀: D₁ and D₂ are identical probability distributions.

• A) We reject H₀ and conclude there is very strong evidence that the median value of the first sample significantly differs from the median value of the second sample.
• B) We reject H₀ and conclude there is very strong evidence that the median value of the first sample is significantly less than the median value of the second sample.
• C) We do not reject H₀ and conclude there is not sufficient evidence that the median value of the first sample is significantly less than the median value of the second sample.
• D) We do not reject H₀ and conclude there is insufficient evidence to conclude that the median value of the first sample is not significantly different from the median value of the second sample.
• E) We do not reject H₀ and conclude there is very strong evidence that the median value of the first sample is significantly greater than the median value of the second sample.

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Definitions:

Pyrogen

Capable of producing fever.

Neutrophils

A type of white blood cell that plays a crucial role in the immune system by fighting off infections and pathogens.

Immunoassays

Laboratory techniques used to measure the concentration of substances in the body by using an immune response, typically involving antibodies or antigens.

Antigens

Foreign substances in the body that trigger an immune response.