Use the information on the right to determine
which students will have positive z-scores.
Aaliyah, who completed the exam in 55
minutes
Benjamin, who completed the exam in 86
minutes
Cynthia, who completed the exam in 72
minutes
The time to complete a standardized
exam is approximately normally
distributed with mean y minutes and
standard deviation o.
u= 70 minutes
o= 10 minutes