Questions from Engineering Statistics

Q: Corrosion fatigue in metals has been defined as the simultaneous action of

Corrosion fatigue in metals has been defined as the simultaneous action of cyclic stress and chemical attack on a metal structure. In the study Effect of Humidity and Several Surface Coatings on the F...

Q: To ascertain the stability of vitamin C in reconstituted frozen orange juice

To ascertain the stability of vitamin C in reconstituted frozen orange juice concentrate stored in a refrigerator for a period of up to one week, the study Vitamin C Retention in Reconstituted Frozen...

Q: For a study of the hardness of gold dental fillings, five

For a study of the hardness of gold dental fillings, five randomly chosen dentists were assigned combinations of three methods of condensation and two types of gold. The hardness was measured. (See Ho...

Q: Electronic copiers make copies by gluing black ink on paper, using

Electronic copiers make copies by gluing black ink on paper, using static electricity. Heating and gluing the ink on the paper comprise the final stage of the copying process. The gluing power during...

Q: Consider the data set in Exercise 14.21. (

Consider the data set in Exercise 14.21. (a) Construct an interaction plot for any two-factor interaction that is significant. (b) Do a normal probability plot of residuals and comment. Exercise 14.2...

Q: Consider combinations of three factors in the removal of dirt from standard

Consider combinations of three factors in the removal of dirt from standard loads of laundry. The first factor is the brand of the detergent, X, Y , or Z. The second factor is the type of detergent, l...

Q: A scientist collects experimental data on the radius of a propellant grain

A scientist collects experimental data on the radius of a propellant grain, y, as a function of powder temperature, extrusion rate, and die temperature. Resources are not available to make repeated...

Q: In the book Design of Experiments for Quality Improvement, published by

In the book Design of Experiments for Quality Improvement, published by the Japanese Standards Association (1989), a study is reported on the extraction of polyethylene by using a solvent and how the...

Q: Assuming a random effects experiment for Exercise 14.2 on page

Assuming a random effects experiment for Exercise 14.2 on page 575, estimate the variance components for brand of orange juice concentrate, for number of days from when orange juice was blended until...

Q: To estimate the various components of variability in a filtration process,

To estimate the various components of variability in a filtration process, the percent of material lost in the mother liquor is measured for 12 experimental conditions, with 3 runs on each condition....