A corporate analyst is testing whether mean inventory turnover has increased.Inventory turnover in six randomly chosen product distribution centers (PDCs) is shown. 
The value of the test statistic is
Definitions:
Republican Coalition
A political alliance or grouping within the Republican Party, often formed around shared interests or political ideologies.
Gender Gap
The disparity between how different genders experience societal, economic, or political issues and outcomes.
Obama
The 44th President of the United States, serving from 2009 to 2017, and the first African American to hold the office.
McCain
Refers to John McCain, an American politician who served as a United States Senator and was the Republican nominee for President in the 2008 election.
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