Business, 15.10.2020 07:01 evanlubbe53

A professor decides to run an experiment to measure the effect of time pressure on final exam scores. He gives each of the 400 students in his course the same finalâ 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 studentâ (0<= Yi<= â100), let Xi denote the amount of time that the student has to complete the exam â( âXi = 90 orâ 120), and consider the regression model â, Which of the following are true about the un-observable â? â(Check all that applyâ)

a. Different students will have different values of because they have unobserved individual specific traits that affect exam performance.
b. represents factors other than time that influence theâ student's performance on the exam.
c. All students will necessarily have the same value of because they are part of the same population.
d. will be zero for all students because time spent studying is likely the only factor that affects exam performance

Answers: 3

Show answers

Another question on Business

Business, 22.06.2019 07:30

When selecting a savings account, you should look at the following factors except annual percentage yield (apy) fees minimum balance interest thresholds taxes paid on the interest variable interest rates

Answers: 1

Answer

Business, 22.06.2019 07:40

(a) what was the opportunity cost of non-gm food for many buyers before 2008? (b) why did they prefer the alternative? (c) what was the opportunity cost in 2008? (d) why did it change?

Answers: 3

Answer

Business, 22.06.2019 11:00

How did the contribution of the goods producing sector to gdp growth change between 2010 and 2011 a. it fell by 0.3%. b. it fell by 2.3%. c. it rose by 2.3%. d. it rose by 0.6%. the answer is b

Answers: 1

Answer

Business, 22.06.2019 13:00

Apopular low-cost airline, parson corp., has gone out of business. although the service and price provided by the airline was what customers wanted, the larger airlines were able to drive the low-cost airline out of business through an aggressive price war. which component of the competitive environment does this illustrate? a) threat of new entrants b)competitors c) economic factors d) customers d) regulators

Answers: 1

Answer

You know the right answer?

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

Questions