Business, 24.04.2020 15:41 atsuedem974

A profesor decides to run an experiment to measure the effect of time pressure on final exam scores. He gives each of 400 students in his course the same final exam, but some students have 90 minutes to complete the exam, while others have 120 minutes. Each student is randomly assigned one of the examination times based on the flip of a coin. Let Yi denote the number of points scored on the exam by the ith student ( 0 less than or equl to Yi less than or equal to 100), let Xi denote the amount of time that the student has to complete the exam (Xi = 90 or 120), and consider the regression model Yi = β0 + β1Xi + ui,

E(ui) = 0 Which of the following are true about the unobservable ui?

a. there is no way to calculate it
b. ui represents factors other than time that influence the student's performance on the exam.
c. ui will be zero for all students because time spent studying is likely the only factor that affects exam performance.

Answers: 1

Show answers

Another question on Business

Business, 22.06.2019 19:30

Adisadvantage of corporations is that shareholders have to pay on profits.

Answers: 1

Answer

Business, 22.06.2019 20:20

Carmen’s beauty salon has estimated monthly financing requirements for the next six months as follows: january $ 9,000 april $ 9,000 february 3,000 may 10,000 march 4,000 june 5,000 short-term financing will be utilized for the next six months. projected annual interest rates are: january 9 % april 16 % february 10 may 12 march 13 june 12 what long-term interest rate would represent a break-even point between using short-term financing and long-term financing?

Answers: 3

Answer

Business, 22.06.2019 21:00

Kendra knight took part in a friendly game of touch football. she had played before and was familiar with football. michael jewett was on her team. in the course of play, michael bumped into kendra and knocked her to the ground. he stepped on her hand, causing injury to a little finger that later required its amputation. she sued michael for damages. he defended on the ground that she had assumed the risk. kendra claimed that assumption of risk could not be raised as a defense because the state legislature had adopted the standard of comparative negligence. what happens if contributory negligence applies? what happens if the defense of comparative negligence applies?

Answers: 2

Answer

Business, 22.06.2019 21:30

What term is used to describe the outsourcing of logistics? a. shipper managed inventoryb. hollow logistics(smi)c. sub-logisticsd. e-logisticse. third-party logistics (3pl)

Answers: 1

Answer

You know the right answer?

A profesor decides to run an experiment to measure the effect of time pressure on final exam scores....

Questions