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Mathematics, 04.12.2020 20:50 itsmaddierae11

In the accompanying diagram, the shaded area represents approximately 95% of the scores on a standardized test. These scores range from 78 to 92. 17. What is the mean? Show your work or explain how you found this answer.
18. What is the standard deviation? Explain or show your work.


In the accompanying diagram, the shaded area represents approximately 95% of the scores on a standa

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