The student union at Cavendish University Zambia is selling union branded

T-shirts to students at 50 Zambian Kwacha (K50.00) per T-shirt. They

must have a guarantee of selling 150 T-shirts. Furthermore, they agree that

for each T-shirt in excess of 150, they will reduce the price per T-shirt by

K0.04. How many T-shirts will it take to maximise the revenue?

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?