Mathematics, 18.11.2019 21:31 spellsaltoniza
En bulbs are randomly selected without replacement from a lot of bulbs some of whichare defective.
(a) if we assume that there are an infinite number of bulbs in the lot and5%of themare defective. what is the probability that at least 2 out of the 10 selected aredefective?
(b) if we know that the lot has not infinite but 120 bulbs, and 12 of them are defective, what is the probability that at least 1 out of the 10 selected is defective?
Answers: 3
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En bulbs are randomly selected without replacement from a lot of bulbs some of whichare defective.
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