2. Consider a teamwork project in which the class is (randomly) divided into two halves. The control half is randomly divided into groups. The treatment half gets to pick their groups. For each of the below relationships between the quality of the project (y) and the eiforts exerted by the teammates (e), discuss what differences in y you might expect between the two groups, referring specically to the mean and variance of performance within the treatment and control group. Assume students know the relationship between y and their chosen e's when making their decisions. (a) y=el+...+e.1 (b) y = min{el, ..., en}