A Random Sample of 20 Items Is Selected from a Population

question 32

Multiple Choice

A random sample of 20 items is selected from a population. When computing a confidence interval for the population mean,what number of degrees of freedom should be used to determine the appropriate t-value?

• A)20
• B)19
• C)21
• D)25

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Definitions:

Self-Worth

An individual's belief in their own value or worthiness, often seen as a critical component of mental health.

Self-Concept

refers to how individuals perceive, evaluate, and think about themselves, including beliefs and feelings about their attributes.

Self-Awareness

A person’s conscious understanding of who he or she is.

Self-Importance

is the perception or belief regarding one's own value, significance, or superiority, which can influence attitudes and behaviors but may also lead to egocentrism or narcissism.