It Is Thought That 63

question 21

Multiple Choice

It is thought that 63.7% of the student body owns a school sweatshirt. A student reports that from a simple random sample of 1000 students, 637 own a school sweatshirt.

• A) This should be trusted since it matches exactly what was thought.
• B) It is highly unlikely that an SRS would yield results exactly matching what was expected.
• C) Thus, 6.37% of the sample own a school sweatshirt, which refutes the original thought.
• D) The student didn't get IRB approval, so the results are invalid.

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Definitions:

El Niño

A climate pattern that occurs in the Pacific Ocean, characterized by the unusual warming of surface ocean waters in the central and eastern tropical Pacific.

Eastern Pacific Basin

A region of the Pacific Ocean bounded by the Americas to the east and Asia and Australia to the west, known for its deep ocean trenches and marine biodiversity.

Ocean Current

A continuous, directed movement of seawater generated by forces acting upon it such as wind, the Coriolis effect, breaking waves, and differences in temperature and salinity.

Ocean Currents

Large-scale water movements in the ocean basin, driven by wind, water density differences, and the Earth's rotation, influencing climate and marine ecosystems.