Q3. The impact of four different types of tips in a hardness tester on the measured hardness of a metal alloy was investigated in this experiment. Four samples of the alloy were acquired, and each tip was used once on every specimen, resulting in the following data: Type of Tip 1 2 Specimen 3 4 123+ 9.3 9.4 9.6 10.0 9.4 9.3 9.8 9.9 3 4 9.2 9.4 9.5 9.7 9.7 9.6 10.0 10.2 (a) Is there any difference in hardness measurements between the tips? Use the formulations to find SS, MSE, and F values. (b) Use Fisher's LSD method to investigate specific differences between the tips. (c) Analyze the residuals from this experiment. Put Computer outputs. Graphs and ANOVA table.