A normal resting heart rate for adults ranges from 60 to 100 beats per minute. If a heart beats fewer than 60 times a minute, that person has “bradycardia (brad-e-KAHR-dee-uh). It’s normal for a heart to beat faster during exercise, but if a heart beats over 100 beats per minute at rest, that person has “tachycardia” (ta·kuh·KAHR·dee·uh). Both bradycardia and tachycardia are abnormal heart rhythms, and a doctor should be consulted. Question: Write a combined inequality that shows normal resting heart rate. Graph that inequality.

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?