In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5. Approximately what percentage of students have scores between 75 and 85?
A) 68%
B) 80%
C) 95%
D) 99%

Question

Quizplus · Accepted Answer

In a normal distribution, about 68% of the data falls within one standard deviation of the mean. Here, 75 to 85 is one standard deviation from the mean of 80.

In a Psychology Class of 100 Students, Test Scores Are