A Random Sample of 144 Observations Has a Mean of 20

question 77

Multiple Choice

A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22. The population standard deviation is known to equal 4.8. The 95.44% confidence interval for the population mean is _____.

• A) 15.2 to 24.8
• B) 19.2 to 20.8
• C) 19.216 to 20.784
• D) 21.2 to 22.8

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Definitions:

Purpose in Life

The sense of meaning, direction, and intentionality in an individual's existence.

Psychological Well-Being

A state, comprising aspects such as self-acceptance, personal growth, purpose in life, positive relations with others, environmental mastery, and autonomy, reflecting an individual's psychological functioning and satisfaction with life.

Sense of Self

An individual's perception, consciousness, and recognition of their identity and personality traits.

Sense of Popularity

An individual's perception or belief about their level of popularity or acceptance within a social group.