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The article “Enhancement of Compressive Properties of Failed Concrete Cylinders with Pol...

The article “Enhancement of Compressive Properties of Failed Concrete Cylinders with Polymer Impregnation” (J. of Testing and Evaluation, 1977: 333–337) reports the following data on impregnated compressive modulus when two different polymers were used to repair cracks in failed concrete.

Obtain a 90% CI for the ratio of variances by first using the method suggested in the text to obtain a general confidence interval formula.

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Solutions For Problems in Chapter 9
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