which firm manufactures heartburn medicines why are three firms grouped together what is the common element between each firm what medicine do firms manufacture which firm produces common cold medicines what is firm a? what two firms make heartburn medicine why would a small sample be considered a large sample? who manufactures generic medicines which firm produces branded medicines in a sample what is firm a which firm makes arthritis medicines what is firm a comparing with firm b which firm only produces branded medication? how many firms does firm a produce? who manufactures medicines what is the difference between firm a and firm b for the purposes of statistical analysis? is it valid to compare a small sample with a large sample from the same target population? quizlet what is the difference between firm a and firm b of a medicine manufacturing firm why would you compare a small sample with a large sample