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Statistics 9 Online
OpenStudy (anonymous):

The scores on the mathematics section of the SAT typically follow the normal curve. Suppose the average was a 510 and the standard deviation was 100. a) What percentage of people scored between a 400 and a 500? b) A friend tells you that 60% of test takers scored lower than him. What was his score? c) If you scored a 720, in which percentile were you? d) What percentage of people scored higher than a 700?

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