Acost-benefit analysis for government goods and services provides only an estimate. true false

What did populists set their sights on after achieving some success on a local level in the late 1800s?

Experiment to investigate effect of medication on levels of stress in males and females. dependant variable?

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?