PLEASE HELP ASAP!! Calculate the amount of tar absorbed by a smoker in one week. The following information will help you with your calculations:
- Assume that a smoker smokes 10 cigarettes a day
- There are 20 mg of tar in most cigarettes (1000 mg = 1 g)
- Approximately 25% of the tar is released in the form of smoke or is exhaled. The remaining 75% is absorbed through the smoker’s lungs.

Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?