# Defect rate

A manufacturing machine has a 3% defect rate.

If 9 items are chosen at random, what is the probability that at least one will have a defect?

If 9 items are chosen at random, what is the probability that at least one will have a defect?

### Correct answer:

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#### You need to know the following knowledge to solve this word math problem:

**statistics**- binomial distribution
**combinatorics**- probability
- combinatorial number
**basic functions**- percentages

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#### Grade of the word problem:

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