Im confused pls me answer the next problem! : ( 1. tony decides to use observation. he visits 10 students and observes them doing schoolwork at home for 30 min. if a student looks at social media during that time, he notes it. (a) provide an advantage of using observation. (b) provide a disadvantage of using observation. (c) what are the sample and population for tony’s research? (d) suppose 3 of the 10 students looked at social media during the observation. what conclusion could tony make about the percent of high school students who use social media while doing schoolwork?