Exercise 4 collinsville construction company purchases steel rods for its projects from both redding rods, inc. and stockton steel. claude carter, quality assurance manager, is trying to determine if it matters whether they purchase rods from redding rods, inc. (population 1) or stockton steel (population 2). in particular, claude wants to go with the supplier that produces the rods with the least variability. he decides to purchase a few rods from each and have his business analyst test to determine if there is a difference in the variance of rods from the two companies. eight rods from redding produced an s12 of 0.15. a sample of 10 stockton rods resulted in an s22 of 0.04. assuming ? -0.05, test for the equality ofthe variances.