A small corporation makes insulation shields for electrical wires using three different types of machines. The corporation
Question:
a. Conduct a test for the homogeneity of the population variances. Use α = .05.
b. Would it be appropriate to proceed with an analysis of variance based on the results of this test? Explain.
c. If the variances of the diameters are different, suggest a transformation that may alleviate their differences, and then conduct an analysis of variance to determine whether the mean diameters differ. Use α = .05.
d. Compare the results of your analysis in part (c) to an analysis of variance on the original diameters.
e. How could the engineer have designed her experiment differently if she knew that the variances of machine B and machine C were so much larger than that of machine A?
A Corporation is a legal form of business that is separate from its owner. In other words, a corporation is a business or organization formed by a group of people, and its right and liabilities separate from those of the individuals involved. It may...
Step by Step Answer:
An Introduction To Statistical Methods And Data Analysis
ISBN: 9781305465527
7th Edition
Authors: R. Lyman Ott, Micheal T. Longnecker