# Aptitude Probability Concepts38

###### Probability distribution of a random variable is also known as A. Probability B. Probability Function C. Distribution Function D. Probability Distribution
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###### A discrete probability distribution may be represented by A. A table B. A graph C. A mathematical Equation D. All of these
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###### If C is non-random variable, the E(C) is A. 0 B. 1 C. 2 D. C
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###### For a probability density function (pdf), the probability of a single point is A. 0 B. 1 C. 2 D. Constant
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###### The mean of hypergeometric distribution is A. nk/N B. n-k/N C. n+k/N D. nn/N
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###### If in a binomial distribution n = 1 then E(X) is A. q B. p C. 0 D. 1
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###### Binomial distribution is symmetrical when A. p = q B. p > q C. p < q D. np > npq
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###### A fair coin is tossed four times, the probability of getting four heads is A. 1/4 B. 1/8 C. 1/8 D. 1/32
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###### In a binomial probability distribution it is impossible to find A. P(X = 0) B. P(X < 0) C. P(X > 0) D. P(0 ≤ X ≤ n)
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###### Hypergeometric distribution has parameters A. 1 B. 2 C. 3 D. 4
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###### Successive trials in binomial distribution are A. Dependent B. Independent C. Equally Likely D. Mutually exclusive
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###### In binomial distribution n=6 and p=0.9, then the value of P(X=7) is A. Zero B. One C. Less than zero D. More than zero
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###### The probability of success changes from trial to trial in A. Sampling distribution B. Binomial distribution C. Hypergeometric distribution D. Geometric distribution
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###### A listing of the possibile outcomes of an experiment and their corresponding probability is called A. Bayesian table B. Random Variable C. Contingency table D. Probability distribution
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###### If you roll a pair of dice, what is the probability that (at least) one of the dice is a 4 or the sum of the dice is 7? A. 15/36 B. 13/36 C. 4/36 D. None of these
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###### If a card is chosen from a standard deck of cards, what is the probability of getting a diamond (♦) or a club(♣)? A. 26/52=1/2 B. 13/52 C. 20/52 D. 12/52
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