A maker of fabric for clothing is setting up a new line to "finish" raw fabric. The line will employ a dyeing cycle time of either 30 minutes or 40 minutes; and temperature of either 150 or 175 Celsius. An experiment will compare all combinations of these choices. Three specimens of fabric will be subjected to each treatment and scored for quality.
a. How many factors are there? Clearly describe what the factors are.
b. How many treatments are there? Clearly describe what the treatments are.
c. How many units are used in the experiment? Clearly describe what the unit is.