A Researcher in the Area of IQ Wishes to Measure

question 45

Short Answer

A researcher in the area of IQ wishes to measure a sample of children using the WISC III. The standard deviation on the WISC-III is 15. How large a sample should be selected if the researcher wishes to be .99 accurate to within 5 IQ points?

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Definitions:

Excretion

The process of removing metabolic waste products and other non-useful materials from an organism to maintain internal homeostasis.

Tubular Reabsorption

The process by which the kidneys reclaim water and solutes from the tubular fluid and return them to the blood.

Nephron

The functional unit of the kidney, responsible for filtering blood and forming urine through processes of filtration, reabsorption, and secretion.

Filtered Molecules

Substances that have passed through a filtering process, often referring to molecules separated based on size or charge, especially in biological and chemical contexts.