Suppose that the average student buys 12 books a year. You have a theory that by offering adiscount you can increase that number. You run a pilot project by offering the discount to arandom sample of 25 students and you find that x = 14 and s = 4.32State the null and alternative hypothesesGive the first symbol in the expression for Ho You could use the confidence interval approach to solve this problem.TrueFalse

Answered: Image /qna-images/answer/b3c5d4ea-08d7-43db-90b6-fbd02e645722.jpg

Answered: Suppose that the average student buys…

Exploring Economics

8th Edition

ISBN:9781544336329

Author:Robert L. Sexton

Publisher:Robert L. Sexton

Chapter1: The Role And Method Of Economics

Section: Chapter Questions

Problem 5P

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Explain the concept of Testing Hypotheses on Two or More Coefficients?
What is centeris paribus assumptions
Did you use Shepard's Lemma to derive X?
The following model studies human welfare using the General Social Survey in the US: happy = 0.014 + 0.209regattend + 0.103occattend + 0.027income + 0.009educ +0.003 female where happy is a dummy variable equal to one if a person is happy, and 0 otherwise: regattend is a dummy variable equal to one if a person regularly attends church, and 0 otherwise: occattend is a dummy variable equal to one if a person occasionally attends church, and 0 otherwise; income is family income in tens of thousands: educ is years of schooling: female = 1 if female. = 0 otherwise Interpret the impact of religion on happiness.
.A researcher is collecting individual data by asking visitors in a train station in a medium sized town to fill in a questionnaire. It takes nearly 30 minutes to complete the survey questions. To encourage higher participation rate, the researcher provides a small financial incentive that is enough to buy a sandwich. The researcher wants to use this sample to make predictions about effect of using social media on health among the residents of the town. a. Explain the random sampling assumption, that is one of the Gauss-Markov assumptions for linear regressions. b. Do you think this assumption is satisfied in the sample collected by the researcher? c. What are the possible consequences of violation of random sampling assumption for predictions based on this sample?
Why would I use a one-tailed (directional) hypothesis? What are the limitations of using a one-tailed hypothesis?
NOMETRICS I| / My courses / Faculty Of Economics & Administrative Sciences / ECON309 / Finals/ ECON 309 Final Exam Assignm 15. Interpreting the intercept in a sample regression function is Oa. reasonable because under certain conditions the estimator is BLUE. of Ob. reasonalble if your sample contains values of Xi around the origin. tion Oc not reasonable because economists are interested in the effect of a change in X on the change in Y. d. not reasonable because you never observe values of the explanatory variables around the origin. Next page
Economist Michael Nieswiadomy of the University of North Texas collected data on Law School Admittance Test (LSAT) scores for the 12 undergraduate majors listed most often by students hoping to enter law school in the class of 2008-9. The table below gives the scores, as well as the ranking for each of these majors in 2008. Economics majors tied philosophy majors for the highest average score. 333. Table 1.1 LSAT Scores for Students Taking the Exam in 2008 Rank 1 1 3 4 5 6 7 8 9 10 11 12 Major Economics Philosophy Engineering History English Finance Political science Psychology Sociology Communications Business administration Criminal justice Average LSAT Score # of Students 157.4 157.4 156.2 155.9 154.7 153.4 153.0 152.5 150.7 150.5 149.1 145.5 3,047 2,184 2,197 4,166 5,120 2,267 14,964 4,355 1,902 2,230 1,971 3,306 Source: Michael Nieswiadomy, "LSAT Scores of Economics Majors: The 2008-09 Class Update Journal of Economic Education, 41:3 (Summer 2010): 331- Use the scientific method…
Suppose the null hypothesis, Ho, is: Darrell has worked 20 hours of overtime this month. What is the Type I error in this scenario? Select the correct answer below: Darrell thinks he has not worked 20 hours of overtime this month when, in fact, he has. Darrell thinks he has not worked 20 hours of overtime this month when, in fact, he has not. O Darrell thinks he has worked 20 hours of overtime this month when, in fact, he has not. Darrell thinks he has worked 20 hours of overtime this month when, in fact, he has. Content attribution FEEDBACK
Econometrics Thomas Eisensee and David Stromberg wanted to measure how much news coverage of a foreign disaster impacted the amount of disaster relief provided by the U.S. government. They argue that the simple relationship would be biased. Let X = Minutes of News Coverage and Y= Disaster Aid. Choose a variable X2 that could bias the simple relationship. This variable should impact the amount of coverage and impact the amount of aid for reasons other than purely news coverage. Eisensee and Stromberg introduce an instrument Z = During the Olympics. Explain how Z could satisfy the relevant and exogenous criteria. Explain how you could use Z to estimate the impact of X on Y free from X2 bias. Hint: you should mention two stages.
What are the three Gauss–Markov conditions? Explain.
Please solve questions 15, 16 and 17. The multivariate demand function below will be needed for questions 12-18. Setting: Grapple, Inc. is a leading seller of laptop personal computers. However, they want to become a leading tablet seller, too. Your marketing department, aided by your economics staff, has estimated a function to help you in the quest for market leader in tablets. The variables are defined after the function. Qg = 10000 - 25Pg + 20Ph + 30Pr - 15dv - 35Psc - 10Pmm + 0.05Ag + 0.03A -25C + 0.1Y Qg = the number of Grapple tablet computers demanded per week. Pg = the price of each new Grapple tablet (in $). Ph = the price of each Hewpaq tablet (in $). Pr = the price of each Ronova tablet. Pdv = the price to equip a tablet with Holographic digital video (in $, this is an upgrade option that enables three-dimensional graphics on a tablet. Two-dimensional graphics is standard equipment). Psc = the price of various screen sizes (in $, a 8 inch is…

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