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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


  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


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

  6. A.

    composition

    B.

    functions

    C.

    events

    D.

    trials


  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


  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


  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


  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%


  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


  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


  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.