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Unformatted text preview: Economics 120A Fall 2006 Prof. Maria Cndido 1 Economics 120A Final Examination Fall Quarter December 5 th , 2006 Instructions: a. You have 3 hours to finish your final exam. Put your name and student ID number on the cover of the bluebook. b. The Buckley Waiver is pre-printed on the back of your bluebook. If you sign it, you will confirm that your exam may be returned in the filing cabinets, which are open to all students, in 245 Sequoyah Hall. c. There are two parts to this final multiple-choice questions (Part I) and longer questions (Part II). Answer them all in your bluebook , and please write neatly. d. You do not need to justify your answers for the multiple-choice questions. e. Show your work for the longer questions. f. Use a pen to write your answers. You are giving up your right to a regrade if you choose to use a pencil. g. The table below indicates how points will be allocated on the exam. Use your time carefully and efficiently. h. Make sure your exam has 10 pages. You can find a formula sheet, as well as probability distribution tables, in the last pages of your exam. i. If a numerical answer is 11 3 , you may leave it like that. You do not have to make it 3.67 j. With you, you should only have a pen, a bluebook and a calculator. k. You will NOT be allowed to leave the room during the final. l. Turn off your cell phone, and your IPod, and good luck! Question Points Part I 27 Part II 1. 6 2. 4 3. 9 4. 12 5. 10 6. 12 7. 12 8. 8 Exam Total 100 Economics 120A Fall 2006 Prof. Maria Cndido 2 PART I: Multiple-Choice Questions (1.5 points each, 27 points total) 1) Using an observed sample to make a statement about the unknown population is engaging in _________ reasoning, while going from a known population to the unknown sample is the basis of _________ reasoning. The former is the realm of statistics while the latter is the sphere of probability theory. a. deductive; inductive b. probabilistic; statistical inference c. inductive; deductive d. deductive; probabilistic 2) Consider a single throw of two dice. Define A to be the event that the sum of faces showing is odd. Let B be the event that the two faces themselves are odd. Which of the following statements is false? a. A and B are mutually exclusive. b. A and B are independent. c. Pr( A B ) = 3 4 d. Pr( A ) = 1 2 and Pr( B ) = 1 4 3) The expected value of a discrete random variable a. is the outcome that is most likely to occur. b. can be found by determining the midpoint of the distribution. c. equals the population median. d. is computed as a weighted average of the possible outcomes of that random variable, where the weights are the probabilities of those outcomes. 4) To standardize a variable you a. subtract its mean and divide by its standard deviation....
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This note was uploaded on 03/20/2012 for the course ECON 120A taught by Professor Jeyeon during the Spring '08 term at UCSD.
- Spring '08