A researcher studying the effect of noise level on concentration randomly assigns student participants to either a noisy room or
a quiet room to take a problem solving test. The researcher subsequently compares the two groups' test scores using a t-test and concluded p = .05. The independent variable in this study is the.
Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal,” Lincoln declared.
