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OpenStudy (anonymous):
A set of sample data has a mean of 62 and a standard deviation of 7. Approximately what percentage of the data is between 41 and 83?
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OpenStudy (amistre64):
(41-62)/7 = lower zscore (83-62)/7 = upper zscore and if they are within a score of 1; 68% of the data within 2; 95% of the data within 3; 99% or so
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