The figure shows a normal distribution with mean m and standard deviation d, including approximate percentages of
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The figure shows a normal distribution with mean m and standard deviation d, including approximate percentages of the distribution corresponding to the regions shown. Suppose the SAT math scores of 1,200 students entering a certain university are normally distributed with a mean score of 600 and standard deviation of 60.Approximately how many of the students have SAT scores less than 540?
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2% 34% 34% 14% m-2d m-d m m+d 14% 2% m+ 2d
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