The purpose of a double-blind study is to: avoid observer and subject bias avoid observer bias and sampling variation avoid subject bias and sampling variation achieve comparability of treated and untreated subjects

6-the us is not democratic (facts/data/information/reason to prove the us is undemocratic)

What is one property that water and oil do not share

Suppose you are a freshmen in college and you have not declared a major. one reason you enrolled at your respective college was the school's vibrant social life. at the same time, you want to balance your academic life because you know that your grades will matter for graduate school or job applications.you decide to forgo partying for two hours to study for an upcoming economics exam. in your first semester's principles of economics class, you learn that the enjoyment you would have received from partying is an example of a(n)