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The average score on a standardized test is 500 points with a standard deviation of 50 points. If 2,000 students take the test at a local school, how many students do you expect…
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The average score on a standardized test is 500 points with a standard deviation of 50 points. If 2,000 students take the test at a local school, how many students do you expect…
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Jul 16, 2018
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The average score on a standardized test is 500 points with a standard deviation of 50 points. If 2,000 students take the test at a local school, how many students do you expect to score between 450 and 550 points?
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high-school
Elbe
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500-50=450 (-1 standard deviation(34%))
500+50=550 (+1 standard deviation(34%))
34%+34%=68%
(0.68)(2000)=1360 students
Peveuve
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Jul 22, 2018
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