Question: 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

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 a = 0.05, is there any indication that conditioning method affects breakingstrength? Conditioning Breaking Strength (lb/in.) 537 540 Method 553 553 550 568 579

Conditioning Breaking Strength (lb/in.) 537 540 Method 553 553 550 568 579 541 545 599 492 528 530 510 571

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