The National Center for Education Statistics monitors many aspects of elementary and secondary education nationwide. Their 1996 numbers are often used as a baseline to assess changes. In 1996​, 34​% of students had not been absent from school even once during the previous school year. In a 2000 ​survey, responses from 8452 students showed that this figure had slipped to 33​%.
Calculate the​ z-score using​ technology, using 2789 successes and a sample size of n equals 8452.