Emily is working on a 2-page persuasive paper about why her school should consider serving different kinds of milk for students. This is the list of reasons she has come up with:

You want to test the hypothesis that smoking cigarettes increases the risk of lung cancer. in your experiment, you take 100 people of various ages and genders for each of your groups. one group smokes. the other group does not smoke. the group that does not smoke is called the group