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a data set is symmetrical with a mean of 100 and a standard deviation of 5. About what percent of the data is between 90 and 105?
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a data set is symmetrical with a mean of 100 and a standard deviation of 5. About what percent of the data is between 90 and 105?

User Yonatan Wilkof
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Here, we want to know the percentage that is 1 standard deviation above the mean and 1 standard deviation below the mean

User Jilseego
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