1.24 2007 Population The 2009 World Almanac and Book of Facts reported that in 2007 there were 12,608,000 people age 16 or older who had a "go outside of the home" disability and that this was 5.5% of the U.S. population (of this age group). These are people who cannot go outside the home without help. How large was the total population (of this age group) in 2007? For Exercises 1.34 and 1.36, indicate whether the study is an observational study or a controlled experiment 1.34 Patients with Alzheimer's disease are randomly divided into two groups. One group is given a new drug, and the other is given a placebo. After six months they are given a memory test to see whether the new drug fights Alzheimer's better than a placebo. 1.36 A local public school encourages, but does not require, students to wear uniforms. The principal of the school compares the grade point averages of students at this school who wear uniforms with the GPAs of those who do not wear uniforms to determine whether those wearing uniforms tend to have higher GPAs