A producer of fabric for clothing is setting up new line to ?finish? raw fabric. Line will use either metal rollers or natural-bristle rollers to raise surface of the fabric; dyeing cycle time of either 30 minutes or 40 minutes; and temperature of either 150° or 175° Celsius. Experiment will compare all combinations of these selections. Six specimens of fabric will be subjected to each treatment and scored for quality.
(a) Create the sketch which shows the treatments formed by all combinations of levels of factors. Then utilize diagram to outline the completely randomized design for three-factor experiment. You may only show top half of the diagram, i.e., for treatments which using metal rollers.
(b) Point out how many individuals (fabric specimens) whole experiment requires