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10 cards from this deck
Number of successes in fixed independent trials
Two possible outcomes (success or failure)
Independent
Remains constant
(nk)pk(1−p)n−k\binom{n}{k} p^k (1-p)^{n-k}(kn)pk(1−p)n−k
Symmetric around the mean
All equal
68%
95%
Z=X−μσZ = \frac{X - \mu}{\sigma}Z=σX−μ
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