Use the 68-95-99.7 rule to solve the problem.
-At one college, GPA's are normally distributed with a mean of 3 and a standard deviation of 0.6. What percentage of students at the college have a GPA between 2.4 and 3.6?
A)99.7%
B)68%
C)95%
D)84%

Question

Quizplus · Accepted Answer

The 68-95-99.7 rule states that approximately 68% of data falls within one standard deviation of the mean in a normal distribution. Here, 2.4 and 3.6 are one standard deviation below and above the mean (3 ± 0.6), so 68% of students have a GPA between 2.4 and 3.6.

Use the 68-95-99.7 Rule to Solve the Problem