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The mean age of the parents guardians of a group of third graders is 35...

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Calculus

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The mean age of the parents guardians of a group of third graders is 35 with a standard deviation of 4 Use the 68 95 99 7 normal distribution rule to predict the percentage of the parents guardians over 31 68 84 16 68 95 2018 Gyntyon Inc TR 99 7 30 20 0 0 20 30 Standard deviations

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