3 pens
3 pens are to be taken from a bunch of 100 pens. If 10 pens are defective, find probability of getting all good pens.
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Peter
The solution is using the binomial distribution which is good for taking with replacement or infinite pens. Should use the hypergeometric distribution instead which is good for taking without replacement or finite pens.
Answer is 0.726530 which deviates only slightly because 100 >> 3 is almost infinite.
Answer is 0.726530 which deviates only slightly because 100 >> 3 is almost infinite.
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