Exercise 10.7 described an experiment in which 26 resistivity observations were made on each of six different concrete mixtures. The article cited there gave the following sample means: 14.18, 17.94, 18.00, 18.00, 25.74, 27.67. Apply Tukey’s method with a simultaneous confidence level of 95% to identify significant differences, and describe your findings (use MSE = 13. 929).
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