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There are two suppliers of aluminum extrusions competing for your business. You are motivated to have...

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Basic Math

There are two suppliers of aluminum extrusions competing foryour business. You are motivated to have extrusions with good (i.e.high) yield strength and low variance. Each supplier provides youthe following yield strength data (in ksi) from their respectiveprocesses:

X1= {76.5, 77.1, 76.1, 76.2, 75.9,76.8, 77.0, 75.8, 76.6, 76.7}

X2= {78.2, 77.9, 77.2, 77.6, 76.2,77.5, 77.2, 76.3, 77.3, 77.8}

At α = 0.05, whom will you choose? Statisticallyjustify your answer.

Please solve by hand instead of using Excel.

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