1. Each individual outcome of an experiment is called |
B |

2. The collection of all possible sample points in an experiment is |
A |

3. A graphical method of representing the sample points of an experiment is |
D |

4. An experiment consists of selecting a student body president and vice president. All undergraduate students (freshmen through seniors) are eligible for these offices. How many sample points (possible outcomes as to the classifications) exist? |
B |

5. Any process that generates well-defined outcomes is |
B |

6. The sample space refers to |
C |

7. In statistical experiments, each time the experiment is repeated |
C |

8. When the assumption of equally likely outcomes is used to assign probability values, the method used to assign probabilities is referred to as the |
D |

9. The counting rule that is used for counting the number of experimental outcomes when n objects are selected from a set of N objects where order of selection is not important is called |
B |

10. The counting rule that is used for counting the number of experimental outcomes when n objects are selected from a set of N objects where order of selection is important is called |
A |

11. From a group of six people, two individuals are to be selected at random. How many possible selections are possible? |
C |

12. When the results of experimentation or historical data are used to assign probability values, the method used to assign probabilities is referred to as the |
A |

13. A method of assigning probabilities based upon judgment is referred to as the |
D |

14. A sample point refers to the |
C |

15. A graphical device used for enumerating sample points in a multiple-step experiment is a |
D |

16. The intersection of two mutually exclusive events |
C |

17. Two events are mutually exclusive |
B |

18. The range of probability is |
C |

19. Which of the following statements is always true? |
B |

20. Events that have no sample points in common are |
C |

21. Initial estimates of the probabilities of events are known as |
D |

22. Two events with nonzero probabilities |
B |

23. Two events, A and B, are mutually exclusive and each have a nonzero probability. If event A is known to occur, the probability of the occurrence of event B is |
C |

24. The addition law is potentially helpful when we are interested in computing the probability of |
C |

25. The sum of the probabilities of two complementary events is |
D |

26. Events A and B are mutually exclusive if their joint probability is |
C |

27. The set of all possible outcomes of an experiment is |
D |

28. Assuming that each of the 52 cards in an ordinary deck has a probability of 1/52 of being drawn, what is the probability of drawing a black ace? |
B |

29. If a dime is tossed four times and comes up tails all four times, the probability of heads on the fifth trial is |
C |

30. If a six sided die is tossed two times and "3" shows up both times, the probability of "3" on the third trial is |
C |

31. If A and B are independent events with P(A) = 0.65 and P(A B) = 0.26, then, P(B) = |
A |

32. If P(A) = 0.4, P(B | A) = 0.35, P(A B) = 0.69, then P(B) = |
B |

33. Of five letters (A, B, C, D, and E), two letters are to be selected at random. How many possible selections are possible? |
D |

34. Given that event E has a probability of 0.31, the probability of the complement of event E |
C |

35. Three applications for admission to a local university are checked, and it is determined whether each applicant is male or female. The number of sample points in this experiment is |
D |

36. Assume your favorite soccer team has 2 games left to finish the season. The outcome of each game can be win, lose or tie. The number of possible outcomes is |
D |

37. Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 3 customers and determining whether or not they purchase any merchandise. The number of sample points in this experiment is |
D |

38. An experiment consists of tossing 4 coins successively. The number of sample points in this experiment is |
A |

39. An experiment consists of three steps. There are four possible results on the first step, three possible results on the second step, and two possible results on the third step. The total number of experimental outcomes is |
C |

40. Since the sun must rise tomorrow, then the probability of the sun rising tomorrow is |
D |

41. If two events are independent, then |
D |

42. Bayes’ theorem is used to compute |
D |

43. On a December day, the probability of snow is .30. The probability of a "cold" day is .50. The probability of snow and "cold" weather is .15. Are snow and "cold" weather independent events? |
C |

44. One of the basic requirements of probability is |
C |

45. The symbol shows the |
B |

46. The symbol shows the |
A |

47. The multiplication law is potentially helpful when we are interested in computing the probability of |
B |

48. If two events are mutually exclusive, then their intersection |
A |

49. The union of events A and B is the event containing all the sample points belonging to |
C |

50. If a penny is tossed three times and comes up heads all three times, the probability of heads on the fourth trial is |
C |

51. If a coin is tossed three times, the likelihood of obtaining three heads in a row is |
D |

52. The union of two events with nonzero probabilities |
D |

53. If P(A) = 0.5 and P(B) = 0.5, then P(A B) |
D |

54. If A and B are independent events with P(A) = 0.4 and P(B) = 0.6, then P(A B) = |
C |

55. If A and B are independent events with P(A) = 0.2 and P(B) = 0.6, then P(A B) = |
D |

56. If A and B are independent events with P(A) = 0.05 and P(B) = 0.65, then P(A B) = |
A |

57. If A and B are mutually exclusive events with P(A) = 0.3 and P(B) = 0.5, then P(A B) = |
C |

58. If A and B are mutually exclusive events with P(A) = 0.3 and P(B) = 0.5, then P(A B) = |
C |

59. A lottery is conducted using three urns. Each urn contains chips numbered from 0 to 9. One chip is selected at random from each urn. The total number of sample points in the sample space is |
D |

60. Of the last 100 customers entering a computer shop, 25 have purchased a computer. If the classical method for computing probability is used, the probability that the next customer will purchase a computer is |
B |

61. Events A and B are mutually exclusive with P(A) = 0.3 and P(B) = 0.2. Then, P(Bc) = |
D |

62. An experiment consists of four outcomes with P(E1) = 0.2, P(E2) = 0.3, and P(E3) = 0.4. The probability of outcome E4 is |
C |

63. Events A and B are mutually exclusive. Which of the following statements is also true? |
C |

64. A six-sided die is tossed 3 times. The probability of observing three ones in a row is |
D |

65. The probability of the occurrence of event A in an experiment is 1/3. If the experiment is performed 2 times and event A did not occur, then on the third trial event A |
B |

66. A perfectly balanced coin is tossed 6 times, and tails appears on all six tosses. Then, on the seventh trial |
D |

67. In an experiment, events A and B are mutually exclusive. If P(A) = 0.6, then the probability of B |
A |

68. The set of all possible sample points (experimental outcomes) is called |
C |

69. A method of assigning probabilities which assumes that the experimental outcomes are equally likely is referred to as the |
B |

70. A method of assigning probabilities based on historical data is called the |
C |

71. The probability assigned to each experimental outcome must be |
D |

72. If P(A) = 0.58, P(B) = 0.44, and P(A B) = 0.25, then P(A B) = |
B |

73. If P(A) = 0.50, P(B) = 0.60, and P(A B) = 0.30, then events A and B are |
C |

74. If P(A) = 0.62, P(B) = 0.47, and P(A B) = 0.88, then P(A B) = |
D |

75. If P(A) = 0.68, P(A B) = 0.91, and P(A B) = 0.35, then P(B) = |
D |

76. If A and B are independent events with P(A) = 0.4 and P(B) = 0.25, then P(A B) = |
B |

77. If a penny is tossed three times and comes up heads all three times, the probability of heads on the fourth trial is |
D |

78. If P(A) = 0.50, P(B) = 0.40, then, and P(A B) = 0.88, then P(B A) = |
C |

79. If A and B are independent events with P(A) = 0.38 and P(B) = 0.55, then P(A B) = |
D |

80. If X and Y are mutually exclusive events with P(X) = 0.295, P(Y) = 0.32, then P(X Y) = |
D |

81. If a six sided die is tossed two times, the probability of obtaining two "4s" in a row is |
B |

82. If A and B are independent events with P(A) = 0.35 and P(B) = 0.20, then, P(A B) = |
D |

83. If P(A) = 0.7, P(B) = 0.6, P(A B) = 0, then events A and B are |
B |

84. If P(A) = 0.45, P(B) = 0.55, and P(A B) = 0.78, then P(A B) = |
D |

85. If P(A) = 0.48, P(A B) = 0.82, and P(B) = 0.54, then P(A B) = |
C |

86. Some of the CDs produced by a manufacturer are defective. From the production line, 5 CDs are selected and inspected. How many sample points exist in this experiment? |
D |

87. An experiment consists of selecting a student body president, vice president, and a treasurer. All undergraduate students, freshmen through seniors, are eligible for the offices. How many sample points (possible outcomes as to the classifications) exist? |
C |

88. Six applications for admission to a local university are checked, and it is determined whether each applicant is male or female. How many sample points exist in the above experiment? |
A |

89. Assume your favorite soccer team has 3 games left to finish the season. The outcome of each game can be win, lose, or tie. How many possible outcomes exist? |
B |

90. Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 4 customers and determining whether or not they purchase any merchandise. How many sample points exist in the above experiment? (Note that each customer is either a purchaser or non-purchaser.) |
D |

91. From nine cards numbered 1 through 9, two cards are drawn. Consider the selection and classification of the cards as odd or even as an experiment. How many sample points are there for this experiment? |
C |

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