When conducting an experiment to evaluate treatment methods, researchers compare the effectiveness of the independent variable applied to the to the results found in the

The researchers compare the effectiveness of the independent variable applied to the sample and to the results found in the research.

Explanation:

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.