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Statistics

GMAT (Graduate Management Admissions Test) scores are normally distributed with a mean of 500 and a standard deviation of 100.

A) What proportion of scores fall in the interval from 350 to 450?

B) What proportion of scores fall in the interval from 550 to 650?

C) A certain graduate business school accepts all applicants whose GMAT scores exceed 620. Approximately what proportion of all those taking the GMAT would qualify for admission to this school?

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Statistics and Probability, Statistics

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