Home
Class 12
MATHS
The probability that a student is not a ...

The probability that a student is not a swimmer is `1/5`. Then the probability that out of five students, four are swimmers is (A) `^5C_4(4/5)^41/5` (B) `(4/5)^41/5`(C) `^5C_1 1/5(4/5)^4` (D) None of these

A

`""^5C_(1)(4/5)^4(1/5)`

B

`""^5C_(1)(4/5)(1/5)^4`

C

`(4)/(5)(1/5)^4`

D

`5(4/5)^5(1/5)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • BINOMIAL DISTRIBUTION

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|30 Videos

  • BINOMIAL DISTRIBUTION

    TARGET PUBLICATION|Exercise EVALUTION TEST|12 Videos

  • BINOMIAL DISTRIBUTION

    TARGET PUBLICATION|Exercise EVALUTION TEST|12 Videos

  • APPLICATIONS OF DERIVATIVES

    TARGET PUBLICATION|Exercise EVALUATION TEST|20 Videos

  • CONTINUITY

    TARGET PUBLICATION|Exercise Evaluation Test|10 Videos

Similar Questions

Explore conceptually related problems

The probability that a student is not a swimmer is 1/5 . Then the probability that out of five students, four are swimmers is (A) ^5C_4""(4/5)^4""1/5 (B) (4/5)^4""1/5 (C) ^5C_1 1/5(4/5)^4 (D) None of these

The probability that a student is not a swimmer is 1/5 . What is the probability that out of 5 students, 4 are swimmers?

The prbability that a student is not a swimmer is 1/5. Then find the probability that our of 5 students exactly 4 are swimmer.

If the probability that a person is not a swimmer is 0.3, then find the probability that out of 5 persons 4 are swimmer

If the probability that a person is not a swimmer is 0.3, then the probability that out of 5 persons 4 are swimmers is

The probability that a marksman will hit a target is given is 11/5. Then the probability that at least once hit in 10 shots is 1-(4/5)^(10) b.1/5^(10) c.1-(1/5)^(10) d.(4/5)^(10)

Probability that A speaks truth is 4/5 . A coin is tossed. A reports that a head appears. The probability that actually there was head is (A) 4/5 (B)1/2 (C) 1/5 (D) 2/5

The probability that out of 5 ship is wrecked by enemies is (1)/(5). The probability that out of 5 ships,at least 4 will is arrive safely after the journey,is

The probability that A speaks truth is (4)/(5) while this probability for B is (3)/(4) .The probability that they contradict (A) (4)/(5) (B) (1)/(5) (C) (7)/(20) (D) (3)/(20)

4(4)/(5)-:6(2)/(5)=?(3)/(4) (b) (5)/(7) (c) (5)/(8)(d)(7)/(11) (e) None of these

TARGET PUBLICATION-BINOMIAL DISTRIBUTION-CRITICAL THINKING
  1. The probability that a student is not a swimmer is 1/5. Then the proba...

    Text Solution

    |

  2. A man makes attempts to hit the target. The probabilty of hitting the ...

    Text Solution

    |

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

    Text Solution

    |

  4. A contest consist of predicting the result win, draw or defeat of 7 fo...

    Text Solution

    |

  5. A coin is tossed successively three times. The probability of getting ...

    Text Solution

    |

  6. A die is thrown 10 times. If getting an even number is considered as a...

    Text Solution

    |

  7. If X follows the binomial distribution with parameters n=6 and p and 9...

    Text Solution

    |

  8. A die is thrown 3 times. Getting a 3 or 6 on the top face is considere...

    Text Solution

    |

  9. The probability that a man can hit a target is 3//4. He tries 5 times....

    Text Solution

    |

  10. If three dice are thrown together, then the probability of getting 5 o...

    Text Solution

    |

  11. 8 coins are tossed simultaneously. The probability of getting at least...

    Text Solution

    |

  12. A fair coin is tossed a fixed number of times. If the probability of g...

    Text Solution

    |

  13. For a binomial distribution,

    Text Solution

    |

  14. A die is thrown thrice. If getting a four is considered a success, the...

    Text Solution

    |

  15. A die is tossed twice. 'Getting a number greater than 4' is considered...

    Text Solution

    |

  16. If the mean and the variance of a binomial variable X are 2 and 1 resp...

    Text Solution

    |

  17. The mean and variance of a binomial distribution are 4 and 3 respectiv...

    Text Solution

    |

  18. A card is drawn at random 4 times, with replacement, from a pack of 52...

    Text Solution

    |

  19. If X be binomial distribution with mean np and variance npq, then find...

    Text Solution

    |

  20. Two cards are drawn successively with replacement from a well shuffled...

    Text Solution

    |