Borrowing Library Books For Americans using library services, the American Library Association (ALA) claims that 67% borrow books. A library director feels that this is not true, so he randomly selects 102 borrowers and finds that 81 borrowed books. Can he show that the ALA claim is incorrect? Use a = 0.01. Use a TI-83 Plus/TI-84 Plus calculator.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.