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Card 3 / 6:
Binomial Distribution
a discrete random variable (RV) that arises from Bernoulli trials. There are a fixed number, n , of independent trials. “Independent” means that the result of any trial (for example, trial 1) does not affect the results of the following trials, and all trials are conducted under the same conditions. Under these circumstances the binomial RV Χ is defined as the number of successes in n trials. The notation is: X ~ B(n, p) μ = np and the standard deviation is σ = n p q . The probability of exactly x successes in n trials is P ( X = x ) = ( n x ) p x q n − x .
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