A study needs to be conducted of the effect of three medicines A, B, and C on the height of adults aged 30 to 45. 90 adults were selected randomly and divided into three equal groups. The first group was asked to take medicine A for 6 months. The second group was asked to take medicine B for 6 months. The third group was asked to take medicine C for 6 months. The average change in height in each group is calculated at the end of the study.
Identify the following values for this study: population, sample, experimental units, explanatory variables, response variable, treatments.
OpenStax Introductory Statistics 2e, 1.4 Experimental Design and Ethics, exercise 2