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A comment on In Japan, small children take the subway and run errands alone (2015). Parent comment

Re:In Japan, small children take the subway and run errands ... by make3 on Sunday December 17, 2017 @01:44PM (#15947013)
yep the average of a 365 tries binomial with 0.01 chance is 3.65 and the value of the pdf for X=0 is 0.0254
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