A Random Sample of 85 Group Leaders, Supervisors, and Similar

question 53

Multiple Choice

A random sample of 85 group leaders, supervisors, and similar personnel revealed that on the average a person spent 6.5 years on the job before being promoted. The standard deviation of the sample was 1.7 years. What is the 95% confidence interval for the true population mean?

• A) 6.46 and 6.54
• B) 3.17 and 9.83
• C) 6.13 and 6.87
• D) 6.20 and 6.70
• E) 6.32 and 6.88

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Definitions:

Drawn

Refers to the process of creating or producing something, usually in the context of drafting legal documents or pulling a negotiable instrument like a check.

Endorsement

The act of publicly supporting or approving something, or a legal amendment to a document or agreement, often seen in insurance policies or bank checks.

Forged

Created, altered, or imitated with the intent to deceive; typically refers to documents, signatures, or art.

Negligence

The failure to take reasonable care to avoid causing injury or loss to another person, resulting in legal liability for the damages caused.