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Recent questions tagged Probability-mcq

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Q: Which one is not a requirement of a binomial distribution?
    Which one is not a requirement of a binomial distribution? A. There are 2 outcomes for each trial B. There is ... for all the trials Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: Two cards are drawn from a well shuffled deck of 52 playing cards with replacement. The probability, that both cards are queens, is
    Two cards are drawn from a well shuffled deck of 52 playing cards with replacement. The probability, that both cards are queens, is Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: The probability that a person is not a swimmer is 0.3. The probability that out of 5 persons 4 are swimmers is
    The probability that a person is not a swimmer is 0.3. The probability that out of 5 persons 4 are swimmers is A. 5C4 ... (0.7)4 (0.3) Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: For the following probability distribution:
    For the following probability distribution: E(X) is equal to : A. 0 B. –1 C. –2 D. –1.8 Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: For the following probability distribution
    For the following probability distribution E(X2) is equal to A. 3 B. 5 C. 7 D. 10 Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: Suppose a random variable X follows the binomial distribution with parameters n and p, where 0 < p < 1.
    Suppose a random variable X follows the binomial distribution with parameters n and p, where 0 < p < 1. If P(x = r) / ... C. 1/5 D. 1/7 Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: In a college, 30% students fail in physics, 25% fail in mathematics and 10% fail in both. One student is chosen at random.
    In a college, 30% students fail in physics, 25% fail in mathematics and 10% fail in both. One student is chosen at ... 9/20 D. 1/3 Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: A and B are two students. Their chances of solving a problem correctly are 1/3 and 1/4,
    A and B are two students. Their chances of solving a problem correctly are 1/3 and 1/4, respectively. If the ... 13/120 D. 10/13 Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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Q: A box has 100 pens of which 10 are defective. What is the probability that out of a sample of 5 pens drawn
    A box has 100 pens of which 10 are defective. What is the probability that out of a sample of 5 pens drawn ... most one is defective? Select the correct answer from above options...
asked Nov 19, 2021 in Education by JackTerrance
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