Question: Pipelines

No fusion 2748 2700 2655 2822 2511

3149 3257 3213 3220 2753

Fused 3027 3356 3359 3297 3125

2910 2889 2902

Normal probability plots with the resulting linear pattern in each plot supports the assumption that the tensile strength distributions under the two conditions are both normal. The authors of the article stated that the fusion process increased the average tensile strength. Does the data support this conclusion? Show the analysis to support your conclusion.