Which of the following would be considered an example of a matched pair or paired data? (1 point) 1. the mean age of residents in Dayton compared to the mean age of residents in Miami
2. the proportion of rainy days in Seattle compared to the proportion of rainy days in Phoenix
3. the percentage of defective products produced by Company A compared to the percentage produced by Company B
4. the math scores of current 9th-grade students compared with their Sth-grade math scores