If a local magazine editor asks a student reporter to interview thirty males and thirty females from each of four local organizations for a prospective story, what type of sampling procedure is being used?
a. systematic sample
b. quota sample
c. stratified sample
d. convenience sample
e. simple random sample

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.

Surfaces of paintings—such as paper, canvas, and pottery—are referred to technically as