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转一篇从数理统计角度关于病毒起源的分析7 d, l8 A' F) s$ m T
https://user.guancha.cn/main/content?id=285543&s=fwzwyzzwzbt' e' U# m3 q, r/ P' ?) x2 X7 o5 H
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Rockland County population 325,789 (2019)# J& H$ M# p h& |
https://www.google.ca/search?sxs ... &sclient=psy-ab$ q2 k: j- }. z
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Rockland County COVID-19 cases 9,699 by April 22$ b ^, _ y7 v9 [
https://www.lohud.com/story/news ... dnesday/3002554001/4 y% T8 R6 R+ t' T
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9699 / 325789 = 2.98% !
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How to Get Rid of Bats in the Attic& s% D. M+ t: d* J
http://www.wildlifeanimalcontrol.com/bats.html
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补充内容 (2020-4-22 23:04):
2 D# O6 B( i- y! m2 l& `1 e& }There have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.
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