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:(a) Estimate the regression line ? y?x = a + ? x.(b) Estimate the shear resistance for a normal stress of 24.5 kilograms per square centimeter.

Transcribed Image Text:

Normal Stress, 26.8 Shear Resistance,y 26.5 27.3 24.2 27.1 25.4 28.9 23.6 Normal Stress,r Shear Resistance,;/ 27.7 23.9 24.7 28.1 26.9 27.4 23.6 25.9 26.3 22.5 21.7 21.4 22.6 25.8 25.6 24.9