Acountry produces two goods: education and weapons of war. it is on its production possibilities frontier. it would like fewer resourses spent on weapons of war and more spent on education. implementing this preference represents an improvement in . opportunity costsb. productive efficiencyc. allocative efficiencyd. diminishing marginal returns

Identify the example of when situation and time are key to assessing risk of harm in a research study: a study on the efficacy of a behavioral intervention for smoking cessation involves both adults and teenagersasking women if they have had an abortionresearch on the prevalence of hiv-infected individuals in communitiesa survey about sexually transmitted diseases

Acurb of this color means you may not stop a) yellow b)green c) red d) blue

True or false? correlations can only be negative.