A Group of 59 Randomly Selected Students Have a Mean $\mu$

question 15

Multiple Choice

A group of 59 randomly selected students have a mean score of 29.5 with a standard deviation of 5.2 on a placement test. What is the 90 % confidence interval for the mean score, $\mu$ , of all students taking the test?

• A) \(28.2 < \mu < 30.8\)
• B) \(28.4 < \mu < 30.6\)
• C) \(27.8 < \mu < 31.2\)
• D) \(27.9 < \mu < 31.1\)

---

Definitions:

Autonomous

The ability of a system or entity to operate independently without direct intervention.

Superego

In Freudian psychoanalysis, the part of the personality that acts as a moral center, imposing ethical standards and social rules.

Freudian Terms

Concepts and vocabulary developed by Sigmund Freud in psychoanalysis, including ideas such as the unconscious mind, defense mechanisms, and Oedipus complex.

Collective Unconscious

Refers to Carl Jung's concept of a part of the unconscious mind that is shared among beings of the same species and contains archetypes.