The article "Compatibility of Outer and Fusible Interlining Fabrics in Tailored Garments (Textile Res. J., 1997: 137-142) gave the following observations on bending rigidity (µN . m) for medium-quality fabric specimens, from which the accompanying Minitab output was obtained:
Would you use a one-sample t confidence interval to estimate true average bending rigidity? Explain your reasoning.