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QUESTION
I am familiar with the empirical rules for normal curves: 1 SD: 68% 2 SD: 95% 3 SD:5, and 49.
I am familiar with the empirical rules for normal curves:
1 SD: 68%
2 SD: 95%
3 SD: 99.5%
please explain the percentages (34, 47.5, and 49.85)
Why would the percentage change for one standard deviation (between -1 and 1) of the mean if the z score changes?
