At a Particular Academically Challenging High School, the Average GPA

question 27

Multiple Choice

At a particular academically challenging high school, the average GPA of a high school senior is known to be normally distributed. After a sample of 20 seniors is taken, the average GPA is found to be 2.71 and the variance is determined to be 0.25. Find a 90% confidence interval for the population mean GPA.

• A) [2.5167, 2.9033]
• B) [2.5261, 2.8961]
• C) [2.5615, 2.8585]
• D) [2.6358, 2.7842]

---

Definitions:

Reform Legislation

Laws enacted to improve systems or institutions by addressing deficiencies and promoting beneficial changes.

Patriotic Spirit

Refers to a sense of national pride and loyalty towards one’s country, often manifested through the celebration of national history, culture, and values.

Liberal Congress

Refers to a legislative body, typically of a country, that is dominated or influenced by liberal political ideologies, focusing on progress, reform, and the protection of individual rights.

Legal Discrimination

Involves the enactment and enforcement of laws that differentiate treatment of groups or individuals based on attributes like race, gender, or religion.