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The probability that a lamp in a classro...

The probability that a lamp in a classroom will be burnt out is 0.3.Six such lamps are fitted in the classroom.If it is known that the classroom is unusable if the number of lamps burning in it is less than four,find the probability that the classroom cannot be used on a random occasion.

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CHETANA PUBLICATION-BINOMIAL DISTRIBUTION-EXERCISE
  1. A fair coin tossed 8 times.The probability that it shows heads a large...

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  2. If mean of a binomial distribution is 3 and variance is 3/2 the proba...

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  3. If X~B(n,P) and E(X)=12,Var(X)=4,then n=?

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  4. A die is thrown three times.The probability of obtaining at most two s...

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  5. In a binomial distribution,n=4.If 2P(X=3)=3P(X=2)then p=……….

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  6. Given that X~B(n=10,P) and E(X)=8,find the value of P.

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  7. The probability that the certain kind of component will survive a chec...

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  8. Let the p.m.f or r.v.x be P(X)=(4/x)(5/x)^x(4/9)^(4-x),x=0,1,2,3,4.Fin...

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  9. Let X~B(n,P) (i) If n=10,E(X)=5,find P and Var(X)

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  10. LetX~B(n,p)(ii)If E(X)=5 and Var(X)=2.5,find n and p.

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  11. A fair coin is tossed 6 times.Find the probability that it shows a lar...

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  12. Let X~B(n,p),if E(x)=5 and Var(x)=2.5,find n and p.

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  13. What is the probability of getting 'sum of 9' twice in 6 tosses of a p...

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  14. A machine has fourteen identical components that function independentl...

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  15. The probability that a lamp in a classroom will be burnt out is 0.3.Si...

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  16. A student has appeared for an examination.There are 20 questions in th...

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  17. A radar complex consists of eight units that operate independently.The...

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  18. A radar complex consists of eight units that operate independently.The...

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  19. It is possible for a computer to pick up an erroneous signal that does...

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  20. It is possible for a computer to pick up an erroneous signal that does...

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