When the employer receives an osha citation, it must be: a. contested and filed with the courts b. copied and mailed to each worker c. posted for 3 days or until the violation is fixed d. signed and returned to osha

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