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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?

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The correct Answer is:
`(11XX9^(3))/(10^(11))`
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ARIHANT PUBLICATION-PROBABILITY-PART V QUESTION FOR PRACTICE (SHORT ANSWER TYPE QUESTIONS)
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  2. It is known that 10% of certain articles manufactured are defective, w...

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  3. Ten eggs are drawn successively with one defective egg. replacement fr...

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  4. On a multiple choice examination with three possible options for each ...

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  5. Suppose x has a binomial distribution B(6,1/2) show that x =3 is t...

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  6. How many times must a man toss a fair coin so that the probability of ...

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  7. A person buys a lottery ticket in 50 lotteries in each of which his ch...

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  8. A person buys a lottery ticket in 50 lotteries in each of which his ch...

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  9. A person buys a lottery ticket in 50 lotteries in each of which his ch...

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  10. The probability that a bulb produced by a factory will fuse after 150 ...

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  11. The probability that a bulb produced by a factory will fuse after 150 ...

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  12. The probability that a bulb produced by a factory will fuse after 150 ...

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  13. The probability that a bulb produced by a factory will fuse after 150 ...

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  14. Five cards are drawn one by one with replacement from a well-shuffled ...

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  15. Five cards are drawn one by one with replacement from a well-shuffled ...

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  16. Five cards are drawn one by one with replacement from a well-shuffled ...

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  17. Find the Binomial distribution, whose mean is 5 and variance is 2.5.

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  18. For a Binomial distribution, the mean is 6 and the standard deviation ...

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