Questions from Engineering Statistics

Q: From a mathematics class of 12 equally capable students using programmed materials

From a mathematics class of 12 equally capable students using programmed materials, 5 students are selected at random and given additional instruction by the teacher. The results on the final examinat...

Q: A defense contractor is interested in studying an inspection process to detect

A defense contractor is interested in studying an inspection process to detect failure or fatigue of transformer parts. Three levels of inspections are used by three randomly chosen inspectors. Five l...

Q: Consider the following analysis of variance for a random effects experiment:

Consider the following analysis of variance for a random effects experiment: Test for significant variance components among all main effects and interaction effects at the 0.01 level of significance...

Q: Three strains of rats were studied under 2 environmental conditions for their

Three strains of rats were studied under 2 environmental conditions for their performance in a maze test. The error scores for the 48 rats were recorded. Use a 0.01 level of significance to test the...

Q: A plant manager would like to show that the yield of a

A plant manager would like to show that the yield of a woven fabric in the plant does not depend on machine operator or time of day and is consistently high. Four randomly selected operators and 3 ran...

Q: A manufacturer of latex house paint (brand A) would like

A manufacturer of latex house paint (brand A) would like to show that its paint is more robust to the material being painted than that of its two closest competitors. The response is the time, in year...

Q: A process engineer wants to determine if the power setting on the

A process engineer wants to determine if the power setting on the machines used to fill certain types of cereal boxes results in a significant effect on the actual weight of the product. The study con...

Q: The Statistics Consulting Center at Virginia Tech was involved in analyzing a

The Statistics Consulting Center at Virginia Tech was involved in analyzing a set of data taken by personnel in the Human Nutrition and Foods Department in which it was of interest to study the effect...

Q: An experiment was conducted in the Department of Food Science at Virginia

An experiment was conducted in the Department of Food Science at Virginia Tech. It was of interest to characterize the texture of certain types of fish in the herring family. The effect of sauce types...

Q: A study was made to determine if humidity conditions have an effect

A study was made to determine if humidity conditions have an effect on the force required to pull apart pieces of glued plastic. Three types of plastic were tested using 4 different levels of humidity...