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MCQs

Random Variable And Probability Distributions

Total Questions : 83 | Page 1 of 9 pages
Question 1. In binomial probability distribution, the dependents of standard deviations must includes
  1.    probability of q
  2.    probability of p
  3.    trials
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 2. In binomial distribution, the formula of calculating standard deviation is
  1.    square root of p
  2.    square root of pq
  3.    square root of npq
  4.    square root of np
 Discuss Question
Answer: Option C. -> square root of npq
Answer: (c).square root of npq
Question 3. The variance of random variable x of gamma distribution can be calculated as
  1.    Var(x) = n + 2 ⁄ μ²;
  2.    Var(x) = n ⁄ μ²;
  3.    Var (x) = n * 2 ⁄ μ²;
  4.    Var(x) = n - 2 ⁄ μ³;
 Discuss Question
Answer: Option B. -> Var(x) = n ⁄ μ²;
Answer: (b).Var(x) = n ⁄ μ²;
Question 4. The formula to calculate standardized normal random variable is
  1.    x - μ ⁄ σ
  2.    x + μ ⁄ σ
  3.    x - σ ⁄ μ
  4.    x + σ ⁄ μ
 Discuss Question
Answer: Option A. -> x - μ ⁄ σ
Answer: (a).x - μ ⁄ σ
Question 5. In random experiment, the observations of random variable are classified as
  1.    events
  2.    composition
  3.    trials
  4.    functions
 Discuss Question
Answer: Option C. -> trials
Answer: (c).trials
Question 6. The class of variable which can accept only the values from set of integers is classified as
  1.    discrete random variable
  2.    continuous random variable
  3.    posterior random variable
  4.    interior random variable
 Discuss Question
Answer: Option A. -> discrete random variable
Answer: (a).discrete random variable
Question 7. If the rate of occurrences in Poisson probability distribution is smaller and the occurrences have large numbers then the distribution tends to be
  1.    negatively skewed and mesokurtic
  2.    positively skewed and mesokurtic
  3.    symmetrical and leptokurtic
  4.    symmetrical and mesokurtic
 Discuss Question
Answer: Option D. -> symmetrical and mesokurtic
Answer: (d).symmetrical and mesokurtic
Question 8. If the total number of elements with some specific characteristics is 18 from a population of 40 and the sample is drawn without replacement with the size of 4 then the mean of hyper geometric probability distribution is
  1.    4.8
  2.    1.8
  3.    2.8
  4.    3.8
 Discuss Question
Answer: Option B. -> 1.8
Answer: (b).1.8
Question 9. The selling price of product is subtracted from purchasing price of product to calculate
  1.    profit of product
  2.    loss of profit
  3.    cumulative average
  4.    weighted average
 Discuss Question
Answer: Option A. -> profit of product
Answer: (a).profit of product
Question 10. The process in which the trials are statistically independent and each trial of event has only two outcomes is classified as
  1.    Bernoulli process
  2.    Bayes process
  3.    functional process
  4.    independent limited process
 Discuss Question
Answer: Option A. -> Bernoulli process
Answer: (a).Bernoulli process

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