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A Binomial Distribution with N Number of Trials,and Probability of Success

Question 31

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A binomial distribution with n number of trials,and probability of success p can be approximated well by a normal distribution with mean np and variance σ2=np(1p) if np>5 and n(1p)>5\sigma ^ { 2 } = n p ( 1 - p ) \text { if } n p > 5 \text { and } n ( 1 - p ) > 5

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