Mr. Yee, a professor at a local university, decides to use observation. He rides in the car with 20 city residents. He notes if he sees the driver texting while driving (a) Provide an advantage of using observation. (b) Provide a disadvantage of using observation. (c) What are the sample and population for Mr. Yee’s research? (d) Suppose 3 of the 20 drivers texted during the observation. What conclusion might Mr. Yee make about the percent of people in the city who text while driving?