Question

Your professor reports test grades as z-scores and you got a score of 2.78 on the exam. Your friend got a z-score of -1. Of the grades satisfy the Nearly Normal Condition, about what percent of the class scored lower than your friend?

Answer 1

We need to use the Z Score Table to solve this... I'll show you

In the table we can see that when someone reaches a z-score of -1.0, then 15.87% will be below that person