Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Introduction to econometrics exam questions

24/04/2021 Client: muhammad11 Deadline: 2 Day

ECON 140A 2020 Summer Exam 3 Note: Please show your work. You will lose points if your work/reasoning is incomplete. Problem 1 Suppose your colleague works for an NGO which is considering a program to provide remote supplemental tutoring to students in rural areas. To estimate the potential effectiveness of the program, your colleague plans to use information from a prior survey which includes student test scores and whether they had a tutor (this survey was conducted prior to any NGO intervention). He decides to use the model below to assess the impact of tutoring on test scores: Yi = α0 + α1 Di , where Yi denotes student i’s test score and Di denotes a binary variable representing whether the a student had a tutor. For convenience, denote yi (1) as student i’s potential test score had they had a tutor and yi (0) as student i’s potential test score had they not had a tutor. Also, denote n1 as the number of students that had a tutor and n0 as the number of students did not have a tutor. d (α̂1 ) = 1.32. He estimates the model and finds that α̂1 = 4.53, and Var (a) (2 points) Assume the requirements for CLT are satisfied. Test the hypotheses  H : α = 0 0 1 . H1 : α1 ̸= 0 (b) (1 point) State the mathematical definition of average treatment effect on treated (ATT) using the notation provided. (c) (1 point) For student i, can we observe both yi (0) and yi (1)? Why or why not? (d) (2 points) Show α̂1 = ATT + 1 X 1 X yi (0) − yi (0). n1 i:D =1 n0 i:D =0 i i You may take the following as given: α̂1 = 1 X 1 X Yi − Yi . n1 i:D =1 n0 i:D =0 i i (e) (2 points) Can you claim that if the NGO randomly assigns a tutor to a student, the student’s score will increase by 4.53 in expectation? Why or why not? Explain with one example. (f) (3 points) Give one possible omitted variable which could result in α̂1 being overestimated related to the true causal effect. Explain your answer in words and justify your answer using the formula from (d). (g) (3 points) Give one possible omitted variable which could result in α̂1 being underestimated related to the true causal effect. Explain your answer in words and justify your answer using the formula from (d). 1 Instead of using survey data, your colleague and the NGO decide to run a small experiment. He randomly selects n students from two schools. Half of them (treatment group) are randomly assigned to receive a 1 hour private tutoring session every week, while the other half (control group) receives nothing. To assess the effectiveness of remote tutoring, he uses a similar regression model: Yi = β0 + β1 Di , where Yi denotes student i’s test score and Di denotes the binary variable represents whether the a student is assigned to the treated group, which receives remote tutoring. (g) (2 points) Describe the “attribution problem”. Is the attribution problem likely to pose a threat to the results of this experiment? You may argue with the students’ schools as an example. (h) (2 points) Why can we use the OLS regression coefficient β1 to identify ATT? What problem does a randomized experiment solve? Use the result of part (d) to explain your answer. Problem 2 Suppose you are conducting an experiment to study the effect of media on people’s political preferences. You randomly assign people into two groups: group 1 receives a pro-Democrat newspaper everyday, and group 2 receives a pro-Republican newspaper everyday. Before the experiment, you survey each subject to determine which party, Democrat or Republican, they prefer (they are asked to choose from one of them). The initial preference is denoted as Xi , where Xi = 0 if i prefers Republican and Xi = 1 if i prefers Democrat. After 4 weeks, you survey all the subjects again and ask them to state the final preferences, Yi , where Yi = 0 if i prefers Republican and Yi = 1 if i prefers Democrat. The final preferences (Yi ) is summarized by treatment groups in the table below. Treatment Group Preference Group 1 Group 2 Prefer Dem. 130 60 Prefer Rep. 70 140 You plan to use the following regression model to estimate the treatment effect of newspaper. Yi = β0 + β1 Di , where Di is a binary variable that denotes whether subject i is assigned in group 1.   d β̂1 . (a) (2 points) Find β̂1 and Var (b) (2 points) Assume the requirements for CLT are satisfied. Test the hypotheses  H : β = 0 0 1 . H1 : β1 ̸= 0 (c) (2 points) Interpret β̂1 . Carefully explain what the result you find represents. 2 (d) (2 points) One researcher sees your study and argues that your result might not be robust due to the attribution problem in the initial preferences prior to the experiment. How can you defend against this issue? Propose a possible analysis that can answer this question, and explain why this can help you defend your finding.

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Top Class Results
Helping Engineer
Ideas & Innovations
Coursework Assignment Help
Quality Assignments
Calculation Guru
Writer Writer Name Offer Chat
Top Class Results

ONLINE

Top Class Results

I have read and understood all your initial requirements, and I am very professional in this task.

$48 Chat With Writer
Helping Engineer

ONLINE

Helping Engineer

Hello, I an ranked top 10 freelancers in academic and contents writing. I can write and updated your personal statement with great quality and free of plagiarism

$48 Chat With Writer
Ideas & Innovations

ONLINE

Ideas & Innovations

I have read your project details. I can do this within your deadline.

$15 Chat With Writer
Coursework Assignment Help

ONLINE

Coursework Assignment Help

I am known as Unrivaled Quality, Written to Standard, providing Plagiarism-free woork, and Always on Time

$46 Chat With Writer
Quality Assignments

ONLINE

Quality Assignments

I will cover all the points which you have mentioned in your project details.

$45 Chat With Writer
Calculation Guru

ONLINE

Calculation Guru

I will cover all the points which you have mentioned in your project details.

$30 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

450 470 mhz band - Theoretical approaches used in counselling - The diagram shows a zn mno2 koh alkaline dry cell - Discussion 2.1 - Igcse biology scheme of work - 1.62 meters to feet - Hcf hearing aid benefits - Week 9 assigment - The twelve apostles facts - 7.5 pounds to aud - Iom future of nursing report brief - Where is the greatest need for mechanical engineers geographically - Discussion: The Role of the RN/APRN in Policy Evaluation, NURS 6050 Policy and Advocacy for Improving Population Health - Slip ring motor diagram - Assignment 7 - Concept analysis paper on clinical manifestations on adolescent and young adult on the use of synthetic drugs. - 2 8 present value of investments answers - Public relations - Week 3 bus - Perceptual map presentation mkt 421 powerpoint - Need Help with my Research Question and Hypothesis Exercise - Ecu nurse practitioner program - How to make an improper fraction into a mixed number - Quality concepts course - Metarteriole and thoroughfare channel - Proposal for Government - Morling b 2012 research methods in psychology - Commenced business with cash - 3 discussion - Lab 6 pressure temperature and volume of gases - Technology - What does the term unconformity mean - Ten 4 bruising rule - Na2co3 + h2o ionic equation - Convert 440 yards to meters - Time and motion study example - Preference matrix in operations management - Elvive thickening shampoo tesco - Katy perry firework remix lyrics - Meritor front drive steer axle - Aps micro inverter monitoring - Which artistic value is least apparent in mannerist paintings - Tien wah press holdings berhad annual report - The smartest guys in the room book chapter summary - For each drawing, you will hear two statements. choose the one that corresponds to the drawing. - Agassi company uses a job order cost system - Shop g23 g30 the landmark 15 queen's road central - Tap water pure substance or mixture - Personality- Psychology - Www gatleymedicalcentre co uk - Lab 6: State InfoSec and Privacy Regulations - In praise of borders worksheet answers - Public service announcement flyer - 20 m sprint test normative data - 36 argyle place millers point - Sans disaster recovery plan template - Health - Week 7 BUS320: E-Commerce and E-Business - Warren g harding promised _______ for americans in 1920 - Describe the distribution of fold mountains - 95 confidence interval z score - Espresso express operates a number of espresso coffee - Fm 4 95 logistics operations - What are the communication challenges and barriers barry faces - Machine language - What is 25 feet long - Blockchain problems - Centrelink one off crisis payment - White rabbit dan murphys - Api 20e quick index booklet - Section 248b corporations act - White duck half dulux - Astro malaysia holdings berhad annual report 2011 - Lesson plan template ofsted - Dr kia pajouhesh net worth - Econ - Public speaking courses brisbane - Folsom of florida booyah sunglasses - ASSIGNMENT 2 - American express customer experience case study - Intro to criminal justice 9th edition - Assignment assistance - As i grew older analysis - Ratio homework - Determination of ka for a weak acid lab answers - Salicylic acid and methanol smell - We have scorched the snake not killed it technique - Bitmap display mips - MT355 Unit 9 Assignment: Writing and Presenting a Research Report - East egg and west egg - Lab 2 separation of a mixture chemistry 1 answers - What is a synthesis claim - Charlemagne had the most profound influence on which continent - Analyzing an Organizational or Corporate Narrative - In the hall of the mountain king art - Week 1 - Darling v charleston community memorial hospital - You think it i ll say it summary - Engine room simulator download - Bordertown to adelaide bus