Suppose your statistics professor reports test grades as​ z-scores, and you got a score of 1.90   on an exam. ​a) Write a sentence explaining what that means. ​b) Your friend got a​ z-score of negative 2 . If the grades satisfy the Nearly Normal​ Condition, about what percent of the class scored lower than your​ friend?

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Suppose your statistics professor reports test grades as​ z-scores, and you got a score of

1.90
 
on an exam.
​a) Write a sentence explaining what that means.
​b) Your friend got a​ z-score of
negative 2
.
If the grades satisfy the Nearly Normal​ Condition, about what percent of the class scored lower than your​ friend?
 
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