Angela's average for six math tests is 87. on her first four tests she had scores of 93, 87,82, and 86. on her last test, she scored four points lower than she did on her fifth test. what scores did angela receive on her fifth and sixth tests? a. fifth test=90; sixth test = 86 b. fifth test =89; sixth test= 85 c. fifth test =85; sixth test = 81 d. fifth test= 85; sixth test= 89

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?