If adam orders a book from store x, how much will he owe to the nearest cent? the tax rate only applies to the cost of the book. comparison of online bookstores store x store y cost of book $17.00 $18.00 tax rate 6% 8% shipping 10% of cost of the book free $17.16 $19.72 $21.53 $27.20

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?