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The amount that a sample mean is expected to vary from the population mean is given by the ________________.
United States
A North American nation, renowned for its considerable global impact on economic, political, and cultural affairs.
Developing Countries
Nations with lower levels of industrialization, underdeveloped economic infrastructure, and lower living standards.
Low-Income Countries
Nations with a gross national income (GNI) per capita below a specific threshold set by international organizations.
Middle-Income Countries
Nations with a gross national income (GNI) per capita that falls between low-income and high-income thresholds defined by international financial institutions.
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