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Sergeu [11.5K]
3 years ago
11

The average score on a standardized test is 500 points with a standard deviation of 50 points. If 2,000 students take the test a

t a local school, how many students do you expect to score between 450 and 550 points?
Advanced Placement (AP)
1 answer:
svp [43]3 years ago
3 0
500-50=450 (-1 standard deviation(34%))
500+50=550 (+1 standard deviation(34%))
34%+34%=68%
(0.68)(2000)=1360 students
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