Pregunta 5 The 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 took a sample and found the mean to...

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Extracted text: Pregunta 5 The 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 took a sample and found the mean to be 860 books. She provides the librarian with an interval estimate of between 740 and 980 books checked out per day. An efficient, unbiased point estimate of the number of books checked out each day at the Library of Congress is: 120 None of these choices 860 d 740 O O O O