Concrete specimens with varying height-to-diameter ratioscut from various positions on
Chapter 9, Problem 38(choose chapter or problem)
Concrete specimens with varying height-to-diameter ratioscut from various positions on the original cylinder wereobtained both from a normal-strength concrete mix andfrom a high-strength mix. The peak stress (MPa) was determinedfor each mix, resulting in the following data (Effectof Length on Compressive Strain Softening of Concrete,J. of Engr. Mechanics, 1997: 2535): a. Construct a comparative boxplot of peak stresses for thetwo types of concrete, and comment on any interestingfeatures.b. Estimate the difference between true average peak stressesfor the two types of concrete in a way that conveys informationabout precision and reliability. Be sure to check theplausibility of any assumptions needed in your analysis.Does it appear plausible that the true average peak stressesfor the two types of concrete are identical? Why or why not?
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