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Arithmetic Aptitude :: Probability

  1.  In binomial probability distribution, dependents of standard deviations must includes

  2. A.

    probability of q

    B.

    probability of p

    C.

    trials

    D.

    all of above

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  3.  Formula to calculate standardized normal random variable is

  4. A.

    x - μ ⁄ σ

    B.

    x + μ ⁄ σ

    C.

    x - σ ⁄ μ

    D.

    x + σ ⁄ μ

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  5.  In random experiment, observations of random variable are classified as

  6. A.

    composition

    B.

    functions

    C.

    events

    D.

    trials

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  7.  Two unbiased coin are tossed .What is the probability of getting at most one head?

  8. A.

    1/4

    B.

    2

    C.

    3/4

    D.

    1

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  9.  Two dice are thrown simultaneously ,what is the probability of getting a total of 7?

  10. A.

    1/3

    B.

    1/6

    C.

    1/12

    D.

    1/24

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  11.  A bag contains 6 white and 4 black balls. Two balls are drawn at random. Find the probability that they are of same colour.

  12. A.

    1

    B.

    2/15

    C.

    3

    D.

    7/15

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  13.  A speaks truth in 75% cases and B in 80% of cases. In what percentage of cases they contradict each other in narrating the same incident?

  14. A.

    15%

    B.

    25%

    C.

    35%

    D.

    45%

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  15.  A bag contains 2 red, 3 green and 2 blue balls.Two balls are drawn at random.What is the probability that none of the drawn ball is blue?

  16. A.

    5/21

    B.

    10/21

    C.

    15/21

    D.

    20/21

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  17.  In which approach to probability the outcomes are equally likely to occur?

  18. A.

    Classical Probability

    B.

    Subjective Probability

    C.

    Relative Frequency

    D.

    Independent

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  19.  Which of the following is not an example of a discrete probability distribution?

  20. A.

    The number of bathrooms in a house

    B.

    The sale or purchase price of a house

    C.

    The number of bedrooms in a house

    D.

    Whether or not a home has a swimming pool in it.

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