Nationwide gmat scores in a particular year had an average, Ask an Expert

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Nationwide, GMAT scores in a particular year had an average of 528 with an SD of 112 and the scores roughly followed a normal curve. If a student scored 600 on the exam, approximately what percentage of test-takers scored below this student?

a. 64%

b. 70%

c. 74%

d. 78%

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