Figure 4b 13 Plot of residuals from the aircraft primer paint experiment versus

Figure 4b 13 plot of residuals from the aircraft

This preview shows page 98 - 102 out of 103 pages.

Figure 4b 13: Plot of residuals from the aircraft primer paint experiment versus application method.
Image of page 98
College of Engineering Education 2 nd Floor, B&E Building Matina Campus, Davao City Telefax: (082) 296-1084 Phone No.: (082)300-5456/300-0647 Local 133 Page 99 of 103 Figure 4b 14: Plot of residuals from the aircraft primer paint experiment versus predicted values ijk . Self-Help In understanding the lesson, the book “Statistics and Probability (2016) by Bateller R., Statistics and Probability theory by Cruz M et al” can be utilized. Topics under ULO 4a can also be accessed through this link chapter14.html Several statistics and probability books can also be downloaded online that can be used to gather more examples and for future reference. Let’s Check Knowledge 1. An engineer suspects that the surface finish of metal parts is influenced by the type of paint used and the drying time. He selected three drying times 20, 25, and 30 minutes and used two types of paint. Three parts are tested with each combination of paint type and drying time. The data are as follows: (a) State the hypotheses of interest in this experiment. (b) Test the hypotheses in part (a) and draw conclusions using the analysis of variance with α = 0.05. (c) Analyze the residuals from this experiment.
Image of page 99
College of Engineering Education 2 nd Floor, B&E Building Matina Campus, Davao City Telefax: (082) 296-1084 Phone No.: (082)300-5456/300-0647 Local 133 Page 100 of 103 2. In the book Design and Analysis of Experiments , 8th edition (2012, John Wiley & Sons), the results of an experiment involving a storage battery used in the launching mechanism of a shoulder-fired ground-to-air missile were presented. Three material types can be used to make the battery plates. The objective is to design a battery that is relatively unaffected by the ambient temperature. The output response from the battery is effective life in hours. Three temperature levels are selected, and a factorial experiment with four replicates is run. The data are as follows: (a) Test the appropriate hypotheses and draw conclusions using the analysis of variance with α = 0.05. (b) Graphically analyze the interaction. (c) Analyze the residuals from this experiment. Let’s Analyze Knowledge 1. An experiment was conducted to determine whether either firing temperature or furnace position affects the baked density of a carbon anode. The data are as follows: (a) State the hypotheses of interest. (b) Test the hypotheses in part (a) using the analysis of variance with α = 0.05. What are your conclusions? (c) Analyze the residuals from this experiment. (d) Using Fisher's LSD method, investigate the differences between the mean baked anode density at the three different levels of temperature. Use α = 0.05.</