In studying a chemical reaction, a chemist performed a 23 factorial design and obtained the following results:
The chemist believes that the standard deviation of each observation is approximately unity. Explaining your assumptions, analyze these data.
(a) What are the main conclusions you draw from the data?
(b) If the chemist wants to perform two further runs and his or her object is to obtain high yield values, what settings of temperature, concentration, and stirring rate would you recommend?