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Ligth bulbs manufactured at a certain factory have a 3% probability of being defective.what is the probability that 5 out of a shipment of 30 will be defective?

Respuesta :

altavistard
This is binomial probability.  Either a bulb is defective or it is not.  P(defective) = 0.03.  Number of trials:  30.  X = 5

If you happen to own a TI 83 or 84 calculator, or a similar one, you could enter the following command:

binompdf(30,0.03,5).  This probability is 0.0016.

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