Aperson wants to count the number of children that play at a playground. he observes the playground for longer than one hour. which sentences explain how randomization is not applied in this situation? select each correct answer. the person observing can select a group to go to the park. there is no selection process. the person observing chose the time frame of longer than 1 hour. there is no control over who is in the study. the person is only observing children.