Consider the Following to Answer the Question(s) Below

question 20

Multiple Choice

Consider the following to answer the question(s) below:
Assume that a Kruskal-Wallis test is being conducted to determine whether or not the medians of three populations are equal. The sum of rankings and the sample size for each group are below.
Group 1 Group 2 Group 3
T1 = 60 T2 = 36 T3 = 24
n1 = 6 n2 = 5 n3 = 4
-At α = 0.05

• A) We fail to reject the null hypothesis and conclude the groups come from the same distribution.
• B) We reject the null hypothesis and conclude the groups come from the same distribution.
• C) We reject the null hypothesis.
• D) We fail to reject the null hypothesis.
• E) We reject the null hypothesis and conclude the groups do not come from the same distribution.

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Definitions:

Genes

Units of heredity made up of DNA, located on chromosomes, that code for the physical and inheritable characteristics of organisms.

Chromosomes

Structures within cells that contain DNA and genetic information necessary for growth, development, and function of an organism.

X Chromosome

One of the two sex chromosomes, playing a key role in determining genetic sex; females typically have two X chromosomes while males have one X and one Y.

Y Chromosome

The sex chromosome typically found in male mammals, which carries genes responsible for the development of male characteristics.