Let's Say That the Grades on This Exam Are Normally

question 244

Multiple Choice

Let's say that the grades on this exam are normally distributed with a mean of 70 and a standard deviation of 10. Approximately what percentage of students will have a grade between 50 and 90 on this exam?

• A)50 percent
• B)95 percent
• C)99 percent
• D)80 percent
• E)Can't tell from this information

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Definitions:

Cahokia

An ancient Native American city located near present-day St. Louis, Missouri, known for its massive earthen mounds and significant role in pre-Columbian indigenous culture.

City of the Sun

An ideal and utopian society envisioned by Italian philosopher Tommaso Campanella in his work "La città del Sole" where goods, women, and children are held in common, reflecting 16th-century communist ideals.

Aztec World

A term referring to the social, political, and cultural systems of the Aztec civilization, which flourished in central Mexico prior to the Spanish conquest in the 16th century.

Settled Agriculture

The practice of farming on permanent plots of land, allowing for the development of more stable and sustainable agricultural communities.