04C_F10

# 04C_F10 - ISOM 111 Tutorial Set 4 Continuous Random...

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Normal Distribution Bell-shaped Curve. Mean: μ Variance: σ 2 If X is normally distributed, we write X N ( μ, σ 2 ) Normal distribution is symmetric about the mean. If X is a normal random variable with mean μ and standard deviation σ , then the standardized variable z = x μ σ is a standardized normal random variable The Normal Approximation to the Binomial Probability Distribution When n is large and value of p is not close to 0 or 1, we can approximate the binomial probability distribution by using a normal distribution with μ = np σ
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