The process of production which has 70% yield, which means that 70% of the products are acceptable and 30% are defective. If three of the products are randomly selected, find the probability that all of them are acceptable.

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uri · Answer

So, each product is an independent event with a 70% chance of success. So, when you have the probabilities of independent events, you just multiply the probabilities. So, this one is 0.7 * 0.7 * 0.7. Does that make sense to you?