On the first test, the scores in Professor Ramirez's introductory psychology class produced a bell-shaped curve. A student who scored better than 84 percent of the other students in the class would have a z score of:

Question

Quizplus · Accepted Answer

The z-score is a way to standardize scores and compare them to the rest of the distribution. If a student scored better than 84% of the other students, it means their score is higher than 84% of the scores in the distribution. This corresponds to a percentile rank of 84, which can be converted to a z-score using a standard normal distribution table. Looking up the area to the left of 0.84 in the table, we find that the corresponding z-score is approximately 1. Therefore, a student who scored better than 84% of the other students in the class would have a z score of +1.

On the First Test, the Scores in Professor Ramirez's Introductory