Aclassmate decides to determine how many hours the average student at your school spends texting. to conduct her research, she interveiws 20 of her freinds. what kind of sample is this

Which of the following is a problem in the health care system of the united states? a. too many doctors in rural areas b. too many doctors who are general practitioners c. fraud d. costs that are too low

On a production possibility curve, data points that fall outside of the curve represent what

What was the name of the theory that said that if one country in a region fell to communism, others would surely follow? 1) domino theory 2) arms race 3) brinkmanship 4) containment theory