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suppose 2% of items produced from as assembly line are defective if we sample 10 items...

suppose 2% of items produced from as assembly line are defective if we sample 10 items what is the probability that 2 or more are defective ?here count follows the binomial distribution. suppose now that we sample 10 items from a small collection like 20 items and count the number of defectives. resulting random variable is not binomial .why not?

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