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It is known that 10% of certain articles...

It is known that 10% of certain articles manufactured are defective. What is the probability that in a random sample of 12 such articles, 9 are defective?

Text Solution

Verified by Experts

The correct Answer is:
N/a
Here `n=12`
`p=10%=10/100=1/10`
`q=1-1/10=9/10`
`:.P(X=9).^(12)C_(9).p^(9).q^(3)`
`=(22xx9^(3))/(10^(11))`
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