Collinsville Construction Company Purchases Steel Rods for Its Projects = 005, the Appropriate Decision Is ________
Collinsville Construction Company purchases steel rods for its projects.Based on previous tests, Claude Carter, Quality Assurance Manager, has recommended not purchasing rods from Redding Rods, Inc.(population 1) , and switching to Stockton Steel (population 2) , since Stockton's rods had less variability in length.Claude has sampled the outputs from Redding's and Stockton's rod manufacturing processes.The results for Redding were s12 = 0.10 with n1 = 8, and, for Stockton, the results were s22 = 0.05 with n2 = 10.Assume that rod lengths are normally distributed in the population If = 0.05, the appropriate decision is ________.
A) reject the null hypothesis 1 2= 1 2
B) reject the null hypothesis 1 2 1 2
C) do not reject the null hypothesis 1 2 1 2
D) do not reject the null hypothesis 1 2 1 2
E) do nothing
Correct Answer:
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