Date Date a ) Provide an excample of a factor that could be in Suppose we were interested in answer to the Allowing providing a crolible general providinglost students with financial gueshon? "pool (6) Explain ( in words) why it is problematic to well on tests improve test performance ? " -incentives to do Simply compare conditional means as way op answering to research question . That is , wt is it not A friend of yours proceeds to answer this a good idea to compare conditioned question by means of way of answering ening the research I. going to a local high school Aquestion . That is , why is it not a good isles test . and collecting performance data on student with to compare the mean test score of student De= to the mean test score of your friend then surveys the parents of all students with Di= Q ? students in her sample, , asking parents, " on the day of the last test your child wrote did () use the econometric model above to show ( mathematically ) how a comparison of in the you promise to pay him off her at least $ 10 they improved their performance relative to the WWW conditional means is #biased by last time they took a similar test ?" selection. Based on the answers to her survey , your friend creates the following group vanable for you sample of c= 1 , ..., N Students: De = S 1 if parent promised to pay if parent oliol not promise to pay She then specifies the following econometric model + to adescribe the test score performance of student ( . Ye = Bot By Di t Up Page Page