A vendor of a software product claims that their new program$/$app called Algebra without Tears greatly enhances the understanding of key mathematical concepts among school students. They approached the Anne Arundel County School District with the suggestion that the program be adopted in county schools and integrated into the curriculum. While the program$$which runs on PC$/$Mac$/$iPad$$has a very nice user interface, it is expensive. There is a $$100,000$ purchase fee, and an annual maintenance license cost of $$12,000.$ The county wants to know what the effect of adopting this program will be on student outcomes. They are aware that some students are already using the program $($on personal licenses$)$ and collect data from three schools. The data is described in the following table: