1st_Midterm_Sp10_VersionA_AnswerKey - Economics 120A Spring...

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Economics 120A Spring 2010 Dr. Maria Cândido 1 Student Name: _____________________________________ Student ID: ________________________________________ Name of Student to your right: _______________________________________ Name of Student to your left: ________________________________________ Economics 120A 1 st Midterm Examination Answer Key Spring Quarter April 22 nd , 2010 Version A Instructions: a. You have 80 minutes to finish your midterm. Put your name and student ID number on the upper left corner of this page. b. Confirm that your test has 9 pages. Make sure you find the formula sheet in the pages of your exam. The last page can be used as scratch paper. c. There are two parts to this midterm – multiple-choice questions (Part I) and problems (Part II). You do not need to justify your answers for the multiple-choice questions. Show ALL your work when you answer the problems. d. Use a pen to write your answers. You give up your right to a regrade if you choose to use a pencil. e. The table below indicates how points will be allocated on the exam. You can answer the questions in any order you like. Use your time carefully and efficiently. Question Points Part I 25 Part II 1. 12 2. 14 3. 12 4. 12 5 9 6 16 Exam Total 100 f. With you, you should only have a pen, and a basic calculator. g. You will NOT be allowed to leave the room during the midterm. Turn off your cell phone, and your IPod, and good luck!
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Economics 120A Spring 2010 Dr. Maria Cândido 2 PART I: Multiple-Choice Questions (2.5 points each, 25 points total) You do NOT need to justify your answers for the multiple choice questions. Please, fill your answers here. 1. ___ A _____ 2. ___ C _____ 3. ____ B ____ 4. ___ D _____ 5. ____ B _____ 6. ____ B ____ 7. ____ D ____ 8. ___ D _____ 9. ___ A _____ 10. ___ D _____ Use the following information for the NEXT THREE QUESTIONS: A government agency has 6,000 employees. The employees were asked whether they preferred a four-day work week (10 hours per day), a five- day work week (8 hours per day), or flexible hours. The employees' responses broken down by sex were: Male Female Four days 300 600 Five days 1,200 1,500 Flexible 300 2,100 1) If you pick one of the 6,000 employees at random, what is the chance you picked a woman who prefers a four-day work week? a. 0.100 b. 0.143 c. 0.200 d. 0.667 2) What is the probability that a randomly selected employee is a male? a. 0.18 b. 0.20 c. 0.30 d. 0.40 3) Given that a person is in favor of flexible time, what is the probability that the person is a male? a. 0.050 b. 0.125 c. 0.167 d. 0.333 4) The measure of center which is the most likely to be influenced by extreme values in a data set is the a. range b. median c. mode d. mean 5) During a cold winter, the temperature stayed below zero for ten days (ranging from -20 to -5). The variance
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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.

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1st_Midterm_Sp10_VersionA_AnswerKey - Economics 120A Spring...

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