Mathematics, 13.12.2019 02:31 johnbuffit08
Tensile-strength tests were carried out on two different grades of wire rod (fluidized bed patenting of wire rods, wire j., june 1977: 5661), resulting in the accompanying data. grade sample size sample mean (kg/mm2 ) sample sd aisi 1064 129 107.6 1.3 aisi 1078 129 123.6 2.0 does the data provide compelling evidence for concluding that true average strength for the 1078 grade exceeds that for the 1064 grade by more than 10 kg/mm2? conduct a hypothesis test using a significance of α = 0.05.
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