Asked by Katelyn

Scores on the GRE​ (Graduate Record​ Examination) are normally distributed with a mean of 554 and a standard deviation of 120. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score between 434 and 674
Answered by PsyDAG
It is ± 1 SD. Use the rule.
Answered by Katelyn
PsyDAG, is it 68/2=34 or
100-68=32 or
68%
Please explain, I'm confused on this part. Thanks
Answered by PsyDAG
68%
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