SOLUTION: Jason and Mary took an entrance exam with a certain company. Jason scored a 76%. His cohort�s average was 80% with a standard deviation of 5%. Mary also scored a 76%. Her c

Question 1010684: Jason and Mary took an entrance exam with a certain company. Jason scored a 76%. His cohort�s average was 80% with a standard deviation of 5%. Mary also scored a 76%. Her cohort�s average was an 83% with a standard deviation of 8%. Determine a z-score for each person and compare their scores using z-scores.

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
For Jason,
(0.76-0.80)/0.05=-0.8
===========
Mary
(0.76-0.83)/0.08
=-0.875
Percentiles:
Jason: 21
Mary:19
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