What Sample Size Is Needed to Estimate a Population Mean

question 82

Multiple Choice

What sample size is needed to estimate a population mean within ±50 of the true mean value using a confidence level of 95%, if the true population variance is known to be 122,500?

• A) 211
• B) 155
• C) 214
• D) 189

Understand the role of propaganda and public sentiment towards foreign influences, unionism, and socialism during the 1920s.

Analyze the legal developments and Supreme Court decisions that shaped civil liberties during the 1920s.

Understand the causes and effects of the stock market crash of 1929 and its relationship to the onset of the Great Depression.

Grasp the significance of key terms, events, and figures in 1920s and early 1930s America, including the Harlem Renaissance.

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Definitions:

Self-Efficacy

An individual's belief in their own capability to accomplish tasks and overcome obstacles to achieve specific goals.

Performance Appraisal

A systematic evaluation process by which the performance of an employee is documented and analyzed, usually by their supervisor.

Self-Awareness

The conscious knowledge of one’s own character, feelings, motives, and desires.

Decisions

The process of making choices or conclusions after consideration of information and different alternatives.