Ch06 - CHAPTER6 PROBABILITY Inthefollowing please circlethe...

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CHAPTER 6 PROBABILITY   MULTIPLE CHOICE QUESTIONS In the following  multiple-choice questions, please circle the correct answer. 1. An   approach   of   assigning   probabilities   which   assumes   that   all   outcomes   of   the   experiment  are equally likely is referred  to as the: a. subjective approach b. objective approach c. classical approach d. relative frequency approach ANSWER: c 2. If  P ( A ) = 0.84,  P ( B ) =0.76 and   P ( A  or  B ) =0.90, then  P ( A  and   B ) is: 3. If  P ( A ) = 0.35,  P ( B ) = 0.45 and   P ( A  and   B ) =0.25, then  P ( A / B ) is: 4. If  P ( A ) = 0.20,  P ( B ) = 0.30 and   P ( and   B ) = 0.06, then   A  and   B  are: 71

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72 Chapter Six 5. If  and   are mutually exclusive events with  P ( A ) = 0.70, then  P ( B ): a. can be any value between  0 and  1 b. can be any value between  0 and  0.70 c. cannot be larger than 0.30 d. cannot be determined  with the information  given ANSWER: c 6. If  A  and   B  are independent  events with   P ( A ) = 0.60 and   P ( A / B ) = 0.60, then  P ( B ) is: 7. If  P ( A ) = 0.65,   P ( B ) = 0.58, and   P ( A  and   B ) = 0.76, then  P ( A  or  B ) is: 8. If you roll an unbiased  die 50 times, you should  expect an even number  to appear: 9. The collection of all possible outcomes of an experiment  is called:  a. a simple event b. a sample space c. a sample d. a population ANSWER: b 10. Which of the following  is not an approach  to assigning  probabilities? 11. A useful graphical method  of constructing  the sample space for an experiment  is:
Probability 73 12. A sample  space of an experiment  consists of the following  outcomes: 1, 2, 3, 4, 5. Which   of the following  is a simple event?

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