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OpenStudy (anonymous):
The average score on a standardized test is 500 points with a standard deviation of 50 points. What is the probability that a student scores more than 400 on the standardized test?
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OpenStudy (amistre64):
well, 400 is 50+50 away from 500, soo we are -2 standard deviations from the mean. what can we use with that information?
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