In a certain course, 27% of the students withdraw before the end of the semester. An educational company offers the class a free trial of an instructional software package designed to help student involvement. During the trial semester, 725 students took the course and used the software, of which 178 ended up withdrawing. Conduct a hypothesis test to determine if this software should be used in future semesters to lower the withdrawal rate. What is the test statistic?

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