Given a Sample Mean of 12

question 34

Multiple Choice

Given a sample mean of 12.5-drawn from a normal population, a sample of size 25, and a sample variance of 2.4-find a 99% confidence interval for the population mean.

• A) [11.7019, 13.2981]
• B) [11.1574, 13.8426]
• C) [11.6334, 13.3666]
• D) [11.7279, 13.2721]

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Definitions:

Fixated

Obsessively focused or attached to someone or something in an immature psychological state.

Gullible

A tendency to be easily deceived or tricked, often due to a lack of skepticism or the desire to believe what one is told.

Preconscious

Mental activities and information not currently in conscious awareness but that can be easily recalled or accessed.

Collective Unconscious

A concept in psychology introduced by Carl Jung, referring to the part of the unconscious mind which is derived from ancestral memory and experience and is common to all humankind.