What Is the Minimum Sample Size Required to Estimate a Population

question 14

Multiple Choice

What is the minimum sample size required to estimate a population mean with 90% confidence when the desired margin of error is D = 1.25? The standard deviation in a preselected sample is 8.5.

• A) n = 76
• B) n = 125
• C) n = 126
• D) n = 190

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Definitions:

Strikes

A work stoppage caused by the mass refusal of employees to work, usually in protest against work conditions, pay levels, or company policies.

Labor Unions

Labor unions are organized associations of workers formed to protect and further their rights and interests regarding working conditions, wages, and benefits.

Members

Individuals who are part of a group, organization, or community, sharing common interests or objectives.

Givebacks

Concessions made by workers to management, often in the form of reduced wages, benefits, or working conditions, typically in exchange for job security.