8.3 Exit Ticket Z-Score

Jamal got a 73 on a math test where the class average was 65 with a standard deviation of 4. His friend, Bethany, is in a different math class with a different teacher. Bethany got an 81 on her math test where the class average was 79 with a standard deviation of 2.

Find their z-scores to determine who did better on their math test.