There are 7 students in Dr. Scott's graduate developmental course. Their ages are: 22, 31, 43, 22, 23, 26, 24. Dr. Scott is interested in how much older than the average student her oldest student is, so she calculates the z-score. Calculate the z-score for the age of the oldest student. Dr. Scott is interested in how much older than the average student her oldest student is, so she calculates the z-score. Calculate the z-score for the age of the oldest student