Three tensile tests were carried out on an aluminum bar. In each test the strain was measured at the same values of stress. The results were Stress (MPa) Strain (Test 1) Strain (Test 2) Strain (Test 3) 34.5 69.0 103.5 138.0 0.46 0.95 1.48 1.93 0.34 1.02 1.51 2.09 0.73 1.10 1.62 2.12 4. Solve Prob. assuming that the third test was performed on an inferior machine, so that its results carry only half the weight of the other two tests.