SITUATION 2 In a certain type of metal test specimen, the normal stress on a specimen is known to be functionally related to the shear resistance. The following is a set of coded experimental data on...

Extracted text: SITUATION 2 In a certain type of metal test specimen, the normal stress on a specimen is known to be functionally related to the shear resistance. The following is a set of coded experimental data on the two variables: Normal Stress, x (MPa) Shear Resistance, y (MPa) 26.8 26.5 25.4 27.3 28.9 24.2 23.6 27.1 27.7 23.6 23.9 25.9 24.7 26.3 28.1 22.5 26.9 21.7 27.4 21.4 22.6 25.8 25.6 24.9 (a) Determine the equation of the best-fit line that relates the normal stress and the shear resistance of the metal specimen. Evaluate the goodness of the fit of the said equation. (b) Predict the magnitude of the normal stress acting on the metal specimen provided that its shear resistance is 24.0 MPa. (c) Predict the magnitude of the shear resistance of the metal specimen if a normal stress of 29.0 MPa is acting on it.