A standard reference material soil sample containing 1.451% (w/w) Ba was analyzed by two laboratories. The results are shown:   Lab 1: 1.382, 1.429, 1.406, 1.405 Lab 2: 1.401, 1.458, 1.426, 1.434   Did the two laboratories report the same weight percentage of Ba at 95% confidence?

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A standard reference material soil sample containing 1.451% (w/w) Ba was analyzed by two laboratories. The results are shown:

 

Lab 1: 1.382, 1.429, 1.406, 1.405

Lab 2: 1.401, 1.458, 1.426, 1.434

 

Did the two laboratories report the same weight percentage of Ba at 95% confidence?

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