Apply the 68-95-99.7 rule to answer the question.
-At one college, GPA's are normally distributed with a mean of 2.8 and a standard deviation of 0.5. What percentage of students at the college have a GPA between 2.3 and 3.3?

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. Since 2.3 and 3.3 are one standard deviation below and above the mean (2.8 ± 0.5), about 68% of students have a GPA between 2.3 and 3.3.

Apply the 68-95-99.7 Rule to Answer the Question