Probability that it will rain tomorrow is 0.39 what is the probability that it will not rain

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 the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Combine the information in the problem and the chart using the average balance method to solve the problem.