In an experiment to compare the tensile strengths ofI 5 5 different types of copper

Chapter 10, Problem 1

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In an experiment to compare the tensile strengths of I = 5 different types of copper wire, J = 4 samples of each type were used. The between-samples and within sample estimates of \(\sigma^{2}\) were computed as MSTr =2673.3 and MSE = 1094.2, respectively. Use the F testat level .05 to test \(H_{0}: \mu_{1}=\mu_{2}=\mu_{3}=\mu_{4}=\mu_{5}\) versus Ha: at least two \(\mu_{i}\)’s are unequal.

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