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Both npnpnp and n(1−p)n(1-p)n(1−p) must be > 5
μ=np\mu = npμ=np
σ=np(1−p)\sigma = \sqrt{np(1-p)}σ=np(1−p)
nnn large, ppp not too close to 0 or 1
Simplifies calculations for large nnn
nnn (trials) and ppp (probability of success)
Becomes more bell-shaped/symmetric
Symmetric
Skewed (asymmetric)
When nnn is large enough
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