exam2_answer_econ120a_su07

exam2_answer_econ120a_su07 - STUDENT CONSENT FOR RELEASE OF...

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STUDENT CONSENT FOR RELEASE OF STUDENT INFORMATION (Buckley Waiver) I hereby authorize the UCSD Economics Department to return my graded final examination/research paper by placing it in a location accessible to all students in the course. I understand that the return of my examination/research paper as described above may result in disclosure of personally identifiable information, that is not public information as defined in UCSD PPM 160-2, and I hereby consent to the disclosure of such information. Quarter Summer 2007 Course Econ 120A Date August 1, 2007 Instructor Professor Yongil Jeon S t u d e n t I D # P r i n t N a m e S i g n a t u r e
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2 FINAL EXAM, ECON 120A, Summer 2007 Economics 120A Name: _________________________ August 1, 2007 Student ID#: ____key______________ Answer to Final Exam: Econometrics (Econ 120A) 1. (20 points) True/False 1-a) (2 points) A simple random sample is selected when every object in the sample has an equal probability of being selected and the objects are selected independently. Answer: True 1-b) (2 points) The Central Limit Theorem states that as the sample size increases, the distribution of the population mean approaches the normal distribution. Answer: False 1-c) (2 points) If a random variable X is exponentially distributed with mean µ , then the distribution of X approaches the normal distribution as the sample size increases. Answer: True 1-d) (2 points) The estimator ˆ θ is said to be an unbiased estimator of if var( ˆ ) =var( ). Answer: False 1-e) (2 points) The bias of an estimator ˆ is equal to E( ˆ )- . Answer: True 1-f) (2 points) The sample standard deviation is an example of an estimator. Answer: True 1-g) (2 points) When computing the confidence interval for the population proportion, you use Student’s t-distribution rather than the normal distribution.
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This note was uploaded on 08/29/2008 for the course ECON 120A taught by Professor Jeyeon during the Summer '08 term at UCSD.

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exam2_answer_econ120a_su07 - STUDENT CONSENT FOR RELEASE OF...

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