In a Particular Large School System, the Average IQ of Elementary

question 160

Short Answer

In a particular large school system, the average IQ of elementary school children is 105 and the standard deviation is 15. A sample of 81 children is randomly selected from elementary schools within the system.
Find the mean of the sampling distribution of .
______________
Find the standard deviation.
______________
What is the probability that the average IQ of this sample is below 108?
______________

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Definitions:

Redeemers Power

Refers to the political power exerted by the Redeemers, a coalition of pro-business, white Democrats who sought to reclaim control from Republican reconstruction governments in the South after the Civil War.

Hospitals

Healthcare institutions providing patient treatment with specialized medical and nursing staff and medical equipment.

Economic Development

The process by which a nation improves the economic, political, and social well-being of its people, often measured by increases in per capita income and quality of life.

Reconstruction

The period following the Civil War (1865-1877) during which the United States attempted to address the issues arising from the readmission to the Union of the 11 states that had seceded.