5.9 times 10 to the 24 subtract 1.3 times 10 to the 22

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?

What is a rational number between 9.5 and 9.7

The difference between tax advoidance and tax evasion