The Head Librarian at the Library of Congress Has Asked

question 184

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,approximately how large a sample did her assistant use to determine the interval estimate?

• A)2
• B)3
• C)12
• D)It cannot be determined from the information given.

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Definitions:

Fats

They are a group of compounds that are insoluble in water and consist of triglycerides. Fats serve as energy storage molecules, insulation, and cell structure components.

Amino Acids

Compounds that function as the primary elements in the formation of proteins, each characterized by a specific arrangement of nitrogen, carbon, hydrogen, and oxygen.

Chemical Digested

The process of breaking down substances into simpler components through chemical reactions, usually referring to the digestion of food.

Brush Border Cells

Epithelial cells found in the intestinal lining and kidney, characterized by a densely packed layer of microvilli on their apical surface to enhance absorption.