On a recent paper,Maria's score,transformed to a z-score,was +1.If the cutoff mark is the upper 10% of the class for As,the upper 10% to 20% for Bs,the upper 20% to 30% for Cs,and the upper 30% to 40% for Ds (below 60% being a failure),what grade did Maria receive on the quiz?
A)A
B)B
C)C
D)F

Question

Quizplus · Accepted Answer

A z-score of +1 corresponds to being one standard deviation above the mean. The upper 10% of the class would be within approximately 1.28 standard deviations above the mean. Therefore, Maria's score falls within the range for a B.

On a Recent Paper,Maria's Score,transformed to a Z-Score,was +1