3) A group of adolescents and a group of adults were tested on their attitudes toward smoking. The particular questionnaire that was given was designed to that higher scores indicated more negative attitudes about smoking. The subjects in the two groups were matched on sex and family history of smoking related deaths. a) What is the independent variable and the matching variable in this situation? (2 pts) (alq Using the data provided below determine whether there is a significant effect of age on attitudes about smoking. (5 pts) quan adolescents: 16 20 10 13 8 19 14 15 -X quo 02-X =2. Ed.0 = a matched adults: 18 22 15 12 14 21 13 19 value that you tical ll