Identification. Which type of sampling is used in the following: independent or related? (1 pt each) 1. To test the wear characteristics of two tire brands, A and B, A. Brand A is mounted on 50 cars and Brand B on 50 other cars. B. On each car, one Brand A tire is mounted on one side in the rear, while a Brand B tire is mounted on the other side. Which side gets which is determined by flipping a coin. The same procedure is used on the front. 2. The principal of a school wishes to determine if the Grade 6 boys are better in mathematics than the Grade 6 girls. A random sample of boys were selected. Then a random sample of girls were selected. All of the students in the two random samples were asked to take a standardized test in mathematics and their scores were determined. 3. A police department wants to assess the effects of an obvious radar trap on the speeds of cars. Ten cars are randomly selected on a highway, and their speeds are measured just before a radar trap comes into view and right after they pass the obvious radar trap