1. If two events are collectively exhaustive, what is the probability that one or the other occurs?a) 0b) 0.50c) 1.00d) Cannot be determined from the information given.2. If two events are collectively exhaustive, what is the probability that both occur at the same time?a) 0b) 0.50c) 1.00d) Cannot be determined from the information given.3. If two events are mutually exclusive, what is the probability that one or the other occurs?a) 0b) 0.50c) 1.00d) Cannot be determined from the information given.4. If two events are mutually exclusive, what is the probability that both occur at the same time?a) 0b) 0.50c) 1.00d) Cannot be determined from the information given.ANSWER:aTYPE: MC DIFFICULTY: EasyKEYWORDS: mutually exclusive88 Introduction and Data Collection5. If two events are mutually exclusive and collectively exhaustive, what is the probability that both occur?a) 0b) 0.50c) 1.00d) Cannot be determined from the information given.ANSWER:aTYPE: MC DIFFICULTY: EasyKEYWORDS: collective exhaustive, mutually exclusive6. If two events are mutually exclusive and collectively exhaustive, what is the probability that one or the otheroccurs?a) 0b) 0.50c) 1.00a) Cannot be determined from the information given.ANSWER:cTYPE: MC DIFFICULTY: EasyKEYWORDS: collectively exhaustive, mutually exclusive7. If events A and B are mutually exclusive and collectively exhaustive, what is the probability that event Aoccurs?a) 0b) 0.50

c) 1.00a) Cannot be determined from the information given.ANSWER:dTYPE: MC DIFFICULTY: moderateKEYWORDS: collectively exhaustive, mutually exclusiveEXPLANATION: We do not know if they are equally likely events.8. If two equally likely events A and B are mutually exclusive and collectively exhaustive, what is the probabilitythat event A occurs?a) 0b) 0.50c) 1.00a) Cannot be determined from the information given.ANSWER:bTYPE: MC DIFFICULTY: easyKEYWORDS: collectively exhaustive, mutually exclusiveIntroduction and Data Collection 899. If two equally likely events A and B are mutually exclusive, what is the probability that event A occurs?a) 0b) 0.50c) 1.00a) Cannot be determined from the information given.ANSWER:dTYPE: MC DIFFICULTY: moderateKEYWORDS: collectively exhaustive, mutually exclusiveEXPLANATION: We do not know if they are collectively exhaustive.10. If two equally likely events A and B are collectively exhaustive, what is the probability that event A occurs?a) 0b) 0.50c) 1.00d) Cannot be determined from the information given.ANSWER:dTYPE: MC DIFFICULTY: moderateKEYWORDS: collectively exhaustive, mutually exclusiveEXPLANATION: We do not know if they are mutually exclusive.11. Selection of raffle tickets from a large bowl is an example ofa) sampling with replacement.b) sampling without replacement.c) subjective probability.d) none of the aboveANSWER:bTYPE: MC DIFFICULTY: EasyKEYWORDS: sampling with replacement, sampling without replacement12. If two events are independent, what is the probability that they both occur?a) 0

b) 0.50c) 1.00d) Cannot be determined from the information given.ANSWER:dTYPE: MC DIFFICULTY: ModerateKEYWORDS: statistical independence90 Introduction and Data Collection13. If the outcome of event A is not affected by event B, then events A and B are said to bea) mutually exclusive.b) statistically independent.c) collectively exhaustive.d) none of the aboveANSWER:bTYPE: MC DIFFICULTY: EasyKEYWORDS: statistical independence14. If event A and event B cannot occur at the same time, then events A and B are said to bea) mutually exclusive.b) statistically independent.c) collectively exhaustive.d) none of the aboveANSWER:aTYPE: MC DIFFICULTY: EasyKEYWORDS: mutually exclusive15. If either event A or event B must occur, then events A and B are said to bea) mutually exclusive.b) statistically independent.c) collectively exhaustive.d) none of the aboveANSWER:cTYPE: MC DIFFICULTY: ModerateKEYWORDS: collectively exhaustive16. The collection of all possible events is calleda) a simple probability.b) a sample space.c) a joint probability.d) the null set.ANSWER:bTYPE: MC DIFFICULTY: ModerateKEYWORDS: sample spaceIntroduction and Data Collection 9117. All the events in the sample space that are not part of the specified event are calleda) simple events.b) joint events.c) the sample space.d) the complement of the event.ANSWER:

dTYPE: MC DIFFICULTY: ModerateKEYWORDS: sample space, complement18. Simple probability is also calleda) marginal probability.b) joint probability.c) conditional probability.d) Bayes' theorem.ANSWER:aTYPE: MC DIFFICULTY: EasyKEYWORDS: marginal probability19. When using the general multiplication rule, P(A and B) is equal toa) P(A|B)P(B).b) P(A)P(B).c) P(B)/P(A).d) P(A)/P(B).ANSWER:aTYPE: MC DIFFICULTY: ModerateKEYWORDS: multiplication rule