If the Estimated Population Standard Deviation Based on Previous Studies

question 13

Multiple Choice

If the estimated population standard deviation based on previous studies is $20, and the acceptable error is plus or minus $5, and the z-value for a 95 percent level of confidence is 1.96, the needed sample size is approximately:

• A)48
• B)210
• C)62
• D)153
• E)196

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Definitions:

Personal Relationships

Emotional and social connections between individuals, marked by feelings of care, love, or significant interpersonal engagement.

Socialization Function

Media’s role in transmitting beliefs, values, and traditions from one generation to the next.

Excitement Function

The role or effect that an activity or stimulus has in generating a feeling of excitement or heightened emotional response.

Echo Chamber Effect

The phenomenon where beliefs are amplified or reinforced by communication and repetition inside a closed system, limiting exposure to differing viewpoints.