Question

Light 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?

Answer 1

There is a 3% chance of each light bulb being defective, and we only want 5 of them to be defective. The chance is then:

$3\%^5*97\%^{25}$

Or this really small number: 1.13474853e-8