il Kim Department of Economics University of Minnesota Introduction to Econometrics‚ Econ4261 Spring 2013 P ROBLEM S ET 1 (D UE F EBRUARY 7‚ T HURSDAY IN CLASS ) Answer the Followings 1. Calculate: a) E[X]‚ E[Y ] b) V ar[X]‚ V ar[Y ] c) Cov[X‚ Y ] d) ρ(X‚ Y ) from the distribution below Y =1 X = 5000 X = 10‚ 000 X = 15‚ 000 0 1/8 1/3 Y =0 1/4 1/8 1/6 (1) 2. Suppose E[X] = 1 and E[Y ] = 2 and suppose X and Y are independent. Evaluate: a) E[2X + 1] b) E[X + Y ] c) E[X − 2Y ] d) E[XY + 1]
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REFLECTION JOURNAL Name: Modules 7 & 8 How to submit: 1. Click on ASSESSMENTS 2. Click on Module 8 Reflection Journal 3. Copy and Paste your Journal into the Student Comments Section 4. Click “Submit for grading” AND “Submit” Directions: Read the questions thoroughly. Answer the questions in a full and complete manner. Use complete sentences‚ including proper spelling and grammar. Module 7 Collision: Costs and Preventions There are many costs associated with owning and driving
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1‚ 2010 for $5‚000‚000. It was expected to have a 10-year life and no residual value. Harrel uses straight-line amortization for patents. On December 31‚ 2011‚ the future cash flows from the patent were expected to be $600‚000 per year for the next 8 years. The present value of these cash flows‚ discounted at Harrel’s market value of these cash flows‚ and discounted at Harrel’s market interest rate‚ is $2‚800‚000. At what amount should the patent be carried on the December 31‚ 2011 balance sheet
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437 × 7 = A. 2819 B. 3024 C. 3059 D. 2804 3. 76 - 34 = A. 52 B. 38 C. 42 D. 28 6. 280 ÷ 8 = A. 35 B. 32 C. 45 D. 38 © 2011 Wonderlic‚ Inc. | www.wonderlic.com | 800.323.3742 Unauthorized duplication of this booklet in part‚ or in full‚ is a violation of federal law and strictly prohibited. WBST Sample Questions —Form QS-A Page 2 Solve each of the applied arithmetic problems in questions 7–12. 7. 8.
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information. Calculate the minimum value of n. (4) (Total 6 marks) 3. (a) Consider the geometric sequence −3‚ 6‚ −12‚ 24‚ …. (i) (ii) Write down the common ratio. Find the 15th term. (3) Consider the sequence x − 3‚ x +1‚ 2x + 8‚ …. IB Questionbank Maths SL 1 (b) When x = 5‚ the sequence is geometric. (i) (ii) Write down the first three terms. Find the common ratio. (2) (c) Find the other value of x for which the sequence is geometric. (4) (d) For this value of
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stretched handspans (in centimeters) of 167 college students. Copyright ©2011 Brooks/Cole‚ Cengage Learning 6 Example 3.1 Height and Handspan The handspan and height measurements have a Copyright ©2011 Brooks/Cole‚ Cengage Learning 7 Example 3.2 Driver Age and Maximum Legibility Distance of Highway Signs • A research firm determined the maximum distance at which each of 30 drivers could read a newly designed sign. – Age range of 30 participants: 18 to 82 yrs. old • We
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[(4+3X) 2] – [E(4+3X)] 2 = E (16+6X+9 X2) – [4+3E(X) ] 2 = 16+6 E(X)+9 E(X2) – 16 - 24 E(X) - 9 [E(X) ] 2 = 16 + 6 +9(6) -16 -24 -9 = 27 7. C (2‚0‚-3‚5‚10)
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issued plus the amount of retained earnings minus treasury stock. D) the amount the company received for all stock when issued minus the amount of retained earnings and treasury stock. 7. Which of the following statements about dividends is not
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QUIZ 1. She hid candles in her shoes so she could study math at night. Sonya Kovalevsky 2. He was a Greek mathematician whose school got burned down. Pythagorus 3. He was a Greek mathematician known for shouting “Eureka!” in his bathtub. Archimedes 4. Her bedroom wall was covered with calculus notes. Sonya Kovalevsky 5. This German mathematician was a smart child who went to college at age 14. Johann Carl Gauss 6. He was an English mathematician who was born on Christmas Day. Isaac Newton 7. He dropped
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Homework 1. Explain how the use of substances alters a person’s state of consciousness‚ including depressants‚ stimulants‚ and hallucinogens. Include in this explanation what happens to the neurotransmitters and body chemicals as well as how you might recognize whether a person at work or in your family is in an altered state of consciousness due to the influence of drugs. Stimulants can be used to speed up the central nervous system making a person fell more alert and aware of their surroundings
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