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Among first year students, scores on the verbal SAT follow the normal curve: the average is around 550 and the SD is about 100. (a)

Among first year students, scores on the verbal SAT follow the normal curve: the average is around 550 and the SD is about 100.

(a) What percentage of those students have scores in the range 400-700?

(b) There were about 1000 students with scores in the range 450-650 on the SAT. About ______ of them had scores in the range 500 to 600. Fill in the blank.

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