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. 
What is the value of the test statistic?
Definitions:
Allopatric Speciation
Speciation pattern in which a physical barrier arises and separates populations, ending gene flow between them.
Geographic Isolation
A form of reproductive isolation in which two populations are separated by physical barriers, leading to the development of distinct species.
Rapid Evolutionary Change
A process where species undergo significant alterations in their genetic makeup over relatively short geological periods, often in response to dramatic environmental shifts.
Midrange Forms
Species or variations within species that exhibit characteristics or traits intermediate between two distinct groups, reflecting evolutionary or genetic transitions.
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