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.What is an efficient, unbiased point
Estimate of the number of books checked out each day at the Library of Congress?
A) 740
B) 830
C) 920
D) 1,660

Question

Quizplus · Accepted Answer

The midpoint of the interval estimate (740 to 920) is the most efficient, unbiased point estimate. The midpoint is calculated as (740 + 920) / 2 = 830.

The Head Librarian at the Library of Congress Has Asked