the deflection temperature under load for two different formulations of ABS plastic pipe is being studied. two samples of 12 observations each are prepared using each formulation and the deflection...

the deflection temperature under load for two different formulations of ABS plastic pipe is being studied. two samples of 12 observations each are prepared using each formulation and the deflection temperatures (in oF) are: formulation 1; 206,188,205,187,193,207,185,189,192,210,194,178, and formulation 2; 177,197,206,201,176,185,200,197,198,188,189,203. (a). construct normal probability plots for both samples. Do these plots support assumptions of normality and equal variance for both samples?(b). does the data support the claim that the mean deflection temperature under load for formulation 1 exceeds that of formulation 2? use @=0.05.(c). what is the p-value for the test in part (a)?