Carmen is a professor at a local university. In collecting data on her Introduction to Business course for a year, she wants to calculate the z-score for a student who scores a 90 on the final exam. The mean and the standard deviation scores on the exam are 76 and 6, respectively. Calculate the z-score.
A) 1.33
B) 2.33
C) 0.33
D) 2.67

Question

Quizplus · Accepted Answer

The z-score is calculated by subtracting the mean from the individual score and then dividing by the standard deviation: $z = \frac{(90 - 76)}{6} = \frac{14}{6} = 2.33$.

Carmen Is a Professor at a Local University