A professor decides to run an experiment to measure the effe
A professor decides to run an experiment to measure the effect of time pressure on final exam scores. He gives each of the 50 students in his course the same final exam, but some students get 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. (25 students will be assigned to the 90 minutes group and vice versa) Let Yi denote the number of points scored on the final exam and let Xi denote the amount of time that the student has to complete the exam. Consider the regression model:Yi = ? + ?Xi + ui
Solution
