The Head Librarian at the Library of Congress Has Asked

question 63

Multiple Choice

The head librarian at the Library of Congress has asked her assistant for an interval estimate
Of the mean number of books checked out each day.The assistant provides the following
Interval estimate: from 740 to 920 books per day.If the head librarian knows that the
Population standard deviation is 150 books checked out per day, and she asked her assistant
For a 95% confidence interval, approximately how large a sample did her assistant use to
Determine the interval estimate?

• A) 125
• B) 13
• C) 11
• D) 4

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Definitions:

Judgement

The ability to make considered decisions or come to sensible conclusions.

Competitive Style

A conflict management strategy characterized by a high concern for self-interest and low concern for the interests of others.

Task Oriented

Describes an approach or behavior that is focused primarily on completing tasks, achieving goals, and maintaining productivity.

Creative

Exhibiting the ability to produce original, innovative ideas or outcomes.