Asked by Irene
                At one college, GPA's are normally distributed with a mean of 2.7 and a standard deviation of 0.5. What percentage of students at the college have a GPA between 2.2 and 3.2?
            
            
        Answers
                    Answered by
            PsyDAG
            
    Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability between the two Z scores.
This is simple enough that the approximation could be memorized.
    
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability between the two Z scores.
This is simple enough that the approximation could be memorized.
                    Answered by
            Anonymous
            
    68
    
                    Answered by
            amy
            
    68%
    
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