An article in the Quality Control Handbook, 3rd edition (McGraw-Hill, 1962) presents the
Chapter 15, Problem 15-38(choose chapter or problem)
An article in the Quality Control Handbook, 3rd edition (McGraw-Hill, 1962) presents the results of an experiment performed to investigate the effect of three different conditioning methods on the breaking strength of cement briquettes. The data are shown in the following table. Using 0.05, is there any indication that conditioning method affects breaking strength?
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