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10-12-2020
Mathematics

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The graph shows the scores of an exam. The mean is 84. The standard deviation is 2.5. About what percent of students scored within one standard deviation of the mean?

A. 45%
B. 68%
C. 75%
D. 32%

The graph shows the scores of an exam The mean is 84 The standard deviation is 25 About what percent of students scored within one standard deviation of the mea class=

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thebroke thebroke

10-12-2020

I think A sorry if i am wrong

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