5-44. The Federal Aviation Administration requires material used to make evacuation systems retain their strength over the life of the aircraft. In an accelerated life test, the principal material. polymer-coated nylon weave, is aged by exposing it to 158 F for 168 hours. The tensile strength of the specimens of this material is measured before and after the aging process. The following data (in psi) are recorded: Specimen Original Aged Specimen Original Aged 215 203 231 218 N - 226 216 234 224 3 226 217 8 219 210 219 211 9 209 201 UI A 222 215 10 216 207 (a) Is there evidence to support the claim that the nylon weave tensile strength is the same before and after the aging process? Use the P-value approach. (b) Find a 99% CI on the mean difference in tensile strength and use it to answer the question from part (a)