Breaking Strength of Wool Serge Material
Not what you're looking for?
The quality control director for a clothing manufacturer wants to study the effect of machines on the breaking strength (in pounds) of wool serge material. A batch of the material is cut into square-yard pieces, and these are randomly assigned, 12 each, to the three machines chosen specifically for the experiment. The results are on file Breakstw (attached).
At the 0.05 level of significance,
A. Is there an effect due to machine?
B. Plot the mean breaking strength for each machine?
C. If appropriate, use the Tukey-Kramer procedure to examine differences among machines.
D. What can you conclude about the effects of machines on breaking strength? Explain.
Purchase this Solution
Solution Summary
The solution discusses breaking strength of wool serge material.
Solution Preview
Please refer to the attachment for full solutions.
A. To figure out if there is difference between these three machines, we perform "single factor ANOVA analysis" under "data analysis" in excel. Based on the output above, ...
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.