The Graduate Management Admission Test GMAT is a standardized exam used by many universities as part of the assessment for admission to graduate study in busines The average GMAT score is 547 t Assume that GMAT scores are bell shaped with a standard deviation of 100 a What percentage of GMAT scores are 647 or higher b What percentage of GMAT scores are 747 or higher c What percentage of GMAT scores are between 447 and 547 d What percentage of GMAT scores are between 447 and 747 6 24 C M