Let's assume that X is a random variable following a Binomial distribution X~B (n=100, p=0.4). By using Normal distribution approximation calculate P (X<45).
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Step 1
The mean of a Binomial distribution is given by μ = np = 100 x 0.4 = 40. The standard deviation of a Binomial distribution is given by σ = sqrt(np(1-p)) = sqrt(100 x 0.4 x 0.6) = 4.899. Show more…
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