A teacher wants to explore what type of activities worked best for the class. the class of 40 was divided by w- number into two groups of 20 one group was assigned electronic homework and one group was assigned paper homework. after a month the teacher gave out a paper test to compare the scores.

1) what type of study or experiment is this?

2) what is the population being examined?

3) what is the explanatory variable? is the categorical or quantitative

4) what is the responsive variable? is the categorical or quantitative

5) what is the potential bias you see in the experiment?