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Rule of 68-95-99.7

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I have enrolled anywhere from 7 to 10 students for the past 6 months. Please put this as an example in the rule of 68-95-99.7 (please be specific) In addition, what is the probability of me enrolling more students?

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I have enrolled anywhere from 7 to 10 students for the past 6 months. Please put this as an example in the rule of 68-95-99.7 (please ...

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