Question

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? 830 920 740 1,660

Answer 1

An efficient and unbiased point estimate of the number of books checked out each day at the Library of Congress is 830.

Step-by-step explanation:

An efficient and unbiased point estimate of the number of books checked out each day at the Library of Congress would be the midpoint of the interval estimate provided. In this case, the interval estimate is from 740 to 920 books per day. To find the midpoint, you would calculate the average of these two values: (740 + 920) / 2 = 830.