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,...

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 degrees F for 168 hours. The tensile strength of the specimens of this material is measured beforea nd after the aging process. The following data (in psi) are recorded:

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.