Binomial distribution is determined by n (number of trials) and p (number of success)
Remember:
Normal approximation should only be used only when n.p and n.q are both greater then 5.
Summary of the Normal Approximation to the Normal Distribution
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Binomial
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Normal
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P(X = a)
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P( a – 0.5 < X < a + 0.5)
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P(X ≥ a)
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P(X > a – 0.5)
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P(X > a)
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P(X > a + 0.5)
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P(X ≤ a)
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P(X < a + 0.5)
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P(X < a)
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P(X < a – 0.5)
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By: J-Lynn B. Ramos
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