Question: 17.33 How much stronger? Continue your work from Ex ercise 17.31. A fabric manufacturer wants to know how large an advantage in strength fabrics treated

17.33 How much stronger? Continue your work from Ex ercise 17.31. A fabric manufacturer wants to know how large an advantage in strength fabrics treated by the Permafresh method have over fabrics treated by the Hylite process. Give a 90% confidence interval for the difference in mean breaking strengths. (Use all 5 fabric swatches.)

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