(Section 11.1) The Design of an Experiment Problem A: In a study, a quality control engineer wishes to compare the effect of using raw material obtained from three different sources, each processed using three fixed temperature settings. -.. (1) Refer to Problem A. Identify the 'experimental units' in the study. Page 1 of 4 (1) The company (3) The different sources (2) The raw material (4) The temperature settings (2) Refer to Problem A. Find the number of 'factors' in the study. (1) 3 (3) 2 (2) 1 (4) 9 -. (3) Refer to Problem A. Find the number of 'treatments' in the study. (1) 2 (3) 6 (2) 9 (4) 3