The Head Librarian at the Library of Congress Has Asked

question 130

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:

Drug and Alcohol Dependence

is a medical condition characterized by an addictive relationship with drugs or alcohol that leads to significant problems or distress.

Religious Beliefs

The specific spiritual principles or convictions held to be true by an individual or group, pertaining to the nature of the divine, moral codes, and afterlife.

Crisis Intervention

Short-term assistance provided to individuals experiencing an immediate and acute psychological crisis to stabilize their condition.

Civil Commitment

A legal process by which an individual can be forced to undergo mental health treatment.