Business Statistics

INTRODUCTION TO PROBABILITY MCQs

Total Questions : 64

Page 1 of 7 pages
Question 1. If a person buys a lottery, the chance of winning a Toyota car is 60%, the chance of winning Hyundai car is 70% and the chance of winning both is 40% then chance of winning Toyota or Hyundai is
  1.    0.6
  2.    0.9
  3.    0.8
  4.    0.5
 Discuss Question
Answer is Option B. -> 0.9
Answer: (b).0.9
Question 2. For a random experiment, all the possible outcomes are called
  1.    numerical space
  2.    event space
  3.    sample space
  4.    both b and c
 Discuss Question
Answer is Option D. -> both b and c
Answer: (d).both b and c
Question 3. According to combination rule, if the total number of outcomes are 'r' and distinct outcome collection is 'n' then combinations are calculated as
  1.    n! ⁄ r!(n - r)!
  2.    n! ⁄ r!(n + r)!
  3.    r! ⁄ n!(n - r)!
  4.    r! ⁄ n!(n + r)!
 Discuss Question
Answer is Option A. -> n! ⁄ r!(n - r)!
Answer: (a).n! ⁄ r!(n - r)!
Question 4. The outcomes of an experiment are classified as
  1.    logged events
  2.    exponential results
  3.    results
  4.    events
 Discuss Question
Answer is Option D. -> events
Answer: (d).events
Question 5. The types of probabilities for independent events must includes
  1.    joint events
  2.    marginal events
  3.    conditional events
  4.    all of above
 Discuss Question
Answer is Option D. -> all of above
Answer: (d).all of above
Question 6. The method of counting the outcomes in which the number of outcomes are determined while considering the ordering is classified as
  1.    intersection combinations
  2.    union combinations
  3.    listed combination
  4.    permutations
 Discuss Question
Answer is Option D. -> permutations
Answer: (d).permutations
Question 7. The method of counting the outcomes in which the number of outcomes are determined without taking care of the arrangement order is classified as
  1.    listed combinations
  2.    union combinations
  3.    intersection combination
  4.    unlisted combinations
 Discuss Question
Answer is Option C. -> intersection combination
Answer: (c).intersection combination
Question 8. The outcome of experiment which can be broken into more convenient list of outcomes is called
  1.    alpha event
  2.    gamma event
  3.    simple event
  4.    random event
 Discuss Question
Answer is Option C. -> simple event
Answer: (c).simple event
Question 9. The important rules in computation of experimental outcomes includes
  1.    multiple experiments
  2.    permutations
  3.    combinations
  4.    all of above
 Discuss Question
Answer is Option D. -> all of above
Answer: (d).all of above
Question 10. For two events, the probability of occurrence of both events at same time or occurrence in series is classified as
  1.    joint probability
  2.    dependent probability
  3.    series probability
  4.    conditional probability
 Discuss Question
Answer is Option A. -> joint probability
Answer: (a).joint probability