Learn by Doing – State the Hypotheses
According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is 0.22. A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor’s degree or higher education level.
A study investigated whether there are differences between the mean IQ level of people who were reared by their biological parents and those who were reared by someone else.
This document is linked from Steps in Hypothesis Testing.