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# Solved: The article “Factorial Experiments in the ISBN: 9780073401331 38

## Solution for problem 21SE Chapter 9

Statistics for Engineers and Scientists | 4th Edition

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Problem 21SE

The article “Factorial Experiments in the Optimization of Alkaline Wastewater Pretreatinent” (M. Prisciandaro, A. Del Borghi, and F. Veglio, Industrial Engineering and Chemistry Research, 2002:5034-5041) presents the results of an experiment to investigate the effects of the concentrations of sulfuric acid (H2SO4) and calcium chloride (CaCl2) on the amount of black mud precipitate in the treatment of alkaline wastewater. There were three levels of each concentration, and two replicates of the experiment were made at each combination of levels. The results are presented in the following table (all measurements are in units of kg/m3). a.Construct an ANOVA table. You may give ranges for the P-values.

b.Is the additive model plausible? Explain.

c.Can you conclude that H2SO4 concentration affects the amount of precipitate? Explain.

d.Can you conclude that CaCl2 concentration affects the amount of precipitate? Explain.

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Chemistry of Solutions Lecture no. 7 Thursday, September 15, 2016 Topics Covered: Le Châtelier’s principle, the nature of acids and bases, acid strength, the pH scale, and calculating the pH of strong acid solutions. Le Châtelier's Principle If a change is imposed on a system at equilibrium, the position of the equilibrium will shift in a direction that tends to reduce that...

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##### ISBN: 9780073401331

Statistics for Engineers and Scientists was written by and is associated to the ISBN: 9780073401331. This full solution covers the following key subjects: concentration, explain, amount, precipitate, alkaline. This expansive textbook survival guide covers 153 chapters, and 2440 solutions. This textbook survival guide was created for the textbook: Statistics for Engineers and Scientists , edition: 4. The full step-by-step solution to problem: 21SE from chapter: 9 was answered by , our top Statistics solution expert on 06/28/17, 11:15AM. The answer to “The article “Factorial Experiments in the Optimization of Alkaline Wastewater Pretreatinent” (M. Prisciandaro, A. Del Borghi, and F. Veglio, Industrial Engineering and Chemistry Research, 2002:5034-5041) presents the results of an experiment to investigate the effects of the concentrations of sulfuric acid (H2SO4) and calcium chloride (CaCl2) on the amount of black mud precipitate in the treatment of alkaline wastewater. There were three levels of each concentration, and two replicates of the experiment were made at each combination of levels. The results are presented in the following table (all measurements are in units of kg/m3). a.Construct an ANOVA table. You may give ranges for the P-values.________________b.Is the additive model plausible? Explain.________________c.Can you conclude that H2SO4 concentration affects the amount of precipitate? Explain.________________d.Can you conclude that CaCl2 concentration affects the amount of precipitate? Explain.” is broken down into a number of easy to follow steps, and 132 words. Since the solution to 21SE from 9 chapter was answered, more than 254 students have viewed the full step-by-step answer.

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