This is for ap psychology. random sampling is random assignment is

Random sampling applies to the process you use to choose people from the population to cooperate in your study. This type of sampling is done in order to ensure the external validity of the sample.

Random assignment applies to the process you use to place members into groups in an exploratory study. It is the significant part of a “true” experiment because it helps assure that any discrepancies found within the groups are attributed to the treatment preferably than a confounding variable.

answer; self-efficacy;

well to answer ur question to be completly honest