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Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 9.5 - Problem 4e
Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 9.5 - Problem 4e

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# The article “Efficient Pyruvate Production by a

ISBN: 9780073401331 38

## Solution for problem 4E Chapter 9.5

Statistics for Engineers and Scientists | 4th Edition

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Problem 4E

Problem 4E

The article “Efficient Pyruvate Production by a Multi-Vitamin Auxotroph of Torulopsis glabrata: Key Role and Optimization of Vitamin Levels” (Y. Li, J. Chen, et al. Applied Microbiology and Biotechnology, 2001,:680-685) investigates the effects of the levels of several vitamins in a cell culture on the yield (in g/L) of pyruvate, a useful organic acid. The data in the following table are presented as two replicates of a 2' design. The factors arc A: nicotinic acid. B: thiamine, and C: biotin. (Two statistically insignificant factors have been dropped. In the article, each factor was tested at four levels; we have collapsed these to two.)

 A B C Yields Mean Yield 1 -1 -1 0.55,0.49 0.520 1 -1 -1 0.60,0.42 0.510 -1 1 -1 0.37,0.28 0.325 1 1 -1 0.30,0.28 0.290 -1 -1 1 0.54,0.54 0.540 1 -1 1 0.54,0.47 0.505 -l 1 1 0.44,0.33 0.385 1 1 1 0.36,0.20 0.280

a. Compute estimates of the main effects and interactions, and the sum of squares and P-value for each.

b. Is the additive model appropriate?

c. What conclusions about the factors can be drawn from these results?

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MICROBIOLOGY [BIOL 2300] NOTES WEEK OF JAN 10 AND WEEK OF JAN 17 CHAPTER 1 HUMANS AND THE MICROBIAL WORLD OTHER IMPORTANT MED TERMS Normal flora is the human microbiome. Objective: data through test Another name for this is normal microbiota Subjective: pain from patient’s POV Dysuria: painful urination Fomites: inanimate Diaphoresis: sweating Examples: food, water, cell phone Pleurisy: pain when breathing Vector: animate Exanthem: rash Examp

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