STAT 201 Normal Approximation

STAT 201 Normal Approximation - STAT 201 Recitation May to...

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Click to edit Master subtitle style 9/26/11 STAT 201 Recitation May 21st, 2010
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9/26/11 Quick Review of Binomial Distribution Constant success probability π (or denoted as p sometime) Mean µ= n π Standard deviation 1- n σ π =
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9/26/11 How to figure out Binomial Distribution problems? When n is small (n≤25), we use Binomial table to figure out the binomial problems But…. If n>25, now how to figure them out??? Use Normal Approximation! That is, convert a binomial distribution problem to be a normal distribution problem.
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Click to edit Master subtitle style 9/26/11 Normal Approximation Of The Binomial Distribution: then a binomial distribution can be approximated as normal distribution with µ= n π If n, and   are such that: π n  ≥5 π n (1- )  π ≥ 5 1- n σ π =
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9/26/11 Example Problem: A hotel has 100 rooms and the probability a room is occupied on any given night is 0.6. Assume the conditions
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STAT 201 Normal Approximation - STAT 201 Recitation May to...

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