Q1. Four different mixing techniques are being examined for the compressive strength of concrete. The following data have been collected. Mixing Technique Compressive Strength (psi) 1 3129 3000 2865 2890 234 3200 3300 2975 3150 4 2800 2600 2900 2985 3050 2700 2600 2765 (a) Test the hypothesis that mixing techniques affect the strength of the concrete. Use a =0.05. Use the formulations to find SS, MSE, and F values. (b) Analyze the residuals from this experiment. Put Computer outputs. Graphs and ANOVA table. (c) Use Fisher's LSD method with a =0.05 test to analyze the means of the three flow rates.