Can anyone help me with homework? I can`t catch a basic idea of the next exercise: $$ X\thicksim Bin(20,0.2)\\P(|X-\mu|\le\sigma)=? $$ Can anyone at least explain how it opens,please?
2026-03-26 09:36:52.1774517812
Binomial distribution with mean and standard deviation
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Hint: We have for a Binomial distribution; $$E(X)=\mu=n \cdot p$$ $$Var(X)=\sigma^2=n\cdot p \cdot (1-p)$$